CBSE Class 4 Mathematics NCERT Solutions: Unit-3 A Trip To Bhopal

Each bus has a seating capacity of 50 children. To find out how many children 4 buses can take, we need to multiply the number of children per bus by the number of buses.

Number of children per bus = 50

Number of buses = 4

Total children = Number of children per bus × Number of buses

= $50\; \backslash times\; 4$

= 200

Therefore, 4 buses can take 200 children.

To find the total number of children going on the trip, we need to add the number of children from each class. The numbers given are for Class I, II, III, IV, and V.

Number of children in Class I = 33

Number of children in Class II = 32

Number of children in Class III = 42

Number of children in Class IV = 50

Number of children in Class V = 53

Total children = 33 + 32 + 42 + 50 + 53

= $33\; +\; 32\; +\; 42\; +\; 50\; +\; 53\; =\; 210$

So, there are a total of 210 children going on the trip.

We know that each bus has 50 seats. If they have 4 buses, we need to calculate the total number of seats available in these 4 buses.

Number of seats in each bus = 50

Number of buses = 4

Total number of seats = Number of seats in each bus × Number of buses

= $50\; \backslash times\; 4$

= 200

So, 200 children will get seats in the 4 buses.

To determine if any children will be left without seats, we compare the total number of children going on the trip with the total number of seats available in the buses.

Total number of children = 210

Total number of seats in 4 buses = 200

Children left out without seats = Total number of children - Total number of seats in buses

= $210\; -\; 200$

= 10

Yes, there will be 10 children left without seats.

To find out how many mini buses are needed, we need to divide the total number of students by the number of students each mini bus can carry.

Total number of students = 210

Number of students each mini bus can take = 35

Number of mini buses needed = Total number of students / Number of seats in each mini bus

= 210 / 35 = 6 Therefore, 6 mini buses are needed to accommodate all 210 students.

The trip starts at 9 O'clock and the travel time is 2 hours without any stops. To find the arrival time, we add the travel duration to the starting time.

Starting time = 9 O'clock

Travel time = 2 hours

Arrival time = Starting time + Travel time

= 9 O'clock + 2 hours

= 11 O'clock

So, they should reach at 11 O'clock.

The problem states that if they don't stop anywhere, they will reach their destination in 2 hours, starting at 9 O'clock, which means they would arrive at 11 O'clock. The question asks about reaching Bhimbetka. Since Bhimbetka is a stop on the way, and the total journey to Bhopal takes 2 hours (reaching at 11 O'clock), reaching Bhimbetka would take less than the full 2 hours. If the total trip takes 2 hours and they reach Bhopal at 11 O'clock, reaching an intermediate stop like Bhimbetka would logically occur before 11 O'clock. Given the options, and assuming Bhimbetka is reached before the final destination, it would be between 10 O'clock and 11 O'clock, or possibly before 10 O'clock if the journey is very short. However, without specific timings for Bhimbetka, and knowing the total trip ends at 11, reaching it 'between 10 O'clock and 11 O'clock' is a reasonable assumption for an intermediate stop.

The most appropriate answer based on the context of reaching Bhopal at 11 O'clock is that they will reach Bhimbetka sometime before that.

Answer: Between 10 O'clock and 11 O'clock.

The question 'Was Victoria right?' refers to a statement made by Victoria that is not fully present in the provided text. Based on the context of the following questions about bridge length and water levels, Victoria might have made a statement about these measurements. Without her specific statement, it's impossible to definitively say if she was right or wrong. However, the provided answer suggests uncertainty or a possibility of her being correct.

Answer: Cannot say! Moreover, it may be right.

To find out how many buses can stand in a line on the bridge, we need to divide the total length of the bridge by the length of one bus.

Length of the bridge = 756.82 metres

Length of one bus = 5 metres

Number of buses that can stand in a line = Length of bridge / Length of one bus

= $756.82\; /\; 5$

= 151.364

Since we can only have a whole number of buses, approximately 151 buses can stand in a line on the bridge. We round down because a fraction of a bus cannot stand on the bridge.

Answer: About 151 buses.

This is a personal question asking about the student's experience. The provided answer is an example of a response a student might give. The length mentioned (756.82 metres) seems to be related to the bridge mentioned in the previous question, possibly indicating that the student crossed that same bridge or a similar one.

Answer: Yes, I crossed a long bridge. It was 756.82 metres long.

To find the difference between the water levels, we subtract the current water level from the water level during the rainy season.

Water level in rainy season = 40 metres

Current water level = 15 metres

Difference in water level = Water level in rainy season - Current water level

= $40\; -\; 15\; \backslash text\{\; metres\}$

= 25 metres

The difference between the water level of the Narmada in the rainy season and now is 25 metres.

The problem states that refilling one bus takes 15 minutes, and there are two buses that need refilling. To find the total time they stop for refilling, we multiply the time per bus by the number of buses.

Time to refill one bus = 15 minutes

Number of buses to be refilled = 2

Total stop time for refilling = Time per bus × Number of buses

= $15\; \backslash times\; 2\; \backslash text\{\; minutes\}$

= 30 minutes

This stop of 30 minutes causes them to be late by 30 minutes compared to their original schedule.

So, they stop there for about 30 minutes, which means they are late by about 30 minutes.

This question requires information from a picture that is not included in the provided text. The picture would typically show the price of diesel per litre. Without the visual aid, it is impossible to determine the price of 1 litre of diesel.

Answer: The price of 1 litre of diesel cannot be determined without the accompanying picture.