NCERT Solutions for Class 4th Maths Chapter 9 Mixed multiplication and division problems — Let Us Solve
Book page 147 Updated on2026-09-19
Q1.
A school bus hires 7 buses to take 245 children to the transport museum. Each bus carry the same number of children. How many children are traveling in each bus?
Answer
35 children travel in each bus.
245 ÷ 7 30 children in each bus: 7 × 30 = 210. 245 − 210 = 35 left. 5 more in each bus: 7 × 5 = 35. 35 − 35 = 0 left. Each bus: 30 + 5 = 35 children Check: 7 × 35 = 245 ✓
Note: The English book prints “A school bus hires 7 buses”. A bus cannot hire buses — the Hindi book says the school hired 7 buses, which is what is meant.
Q2.
The Darjeeling Himalayan Railway is fondly called the “Toy Train”. This toy train ride is also a UNESCO World Heritage Site. This amazing train runs between New Jalpaiguri and Darjeeling and it also passes through one of the highest stations in the world, namely, Ghum. It runs 88 km daily. How much distance does it travel in a week?
Answer
The picture in the book: the small blue Darjeeling “Toy Train” winding through the hills between New Jalpaiguri and Darjeeling.
The train travels 616 km in a week.
1 week = 7 days 88 km each day × 7 days 80 × 7 = 560 km 8 × 7 = 56 km 560 + 56 = 616 km
Why it happens: Each day is one equal group of 88 km, and a week has 7 such groups.
Q3.
The 16 Km river rafting from Shivpuri to Rishikesh in the Ganga provides the most interesting rafting opportunity. In the summer months, VentureOut company took 259 people for rafting. Each raft can take 7 people. How many rafts did it take?
Tip: The 16 km distance is extra information. It is not needed to find the number of rafts.
Q4.
Anu saves ₹45 every month by putting it in her piggy bank. a) How much money will Anu save in 6 months? b) She distributes the total money saved after 6 months among 6 of her friends. How much does each friend get? c) If she decides to distribute the saved money among 3 friends after 6 months, how much money will each get?
b) ₹270 shared among 6 friends → 270 ÷ 6 6 × 45 = 270, so each friend gets ₹45
c) ₹270 shared among 3 friends → 270 ÷ 3 3 × 90 = 270, so each friend gets ₹90
Why it happens: In part (b) there are 6 friends and 6 months of saving, so each friend gets exactly one month’s saving. In part (c) there are half as many friends, so each one gets twice as much.
Q5.
Raju drives an auto in his village and takes people to the bus stand. He makes 8 trips in a day. Which of the following questions can be exactly calculated with the above statement? a) How much money does he make in a day? b) How many trips does he make in 7 days? c) How much time does one trip take? d) How many trips does he make in 4 weeks?
Answer
Only (b) and (d) can be calculated exactly.
Question
Can we answer it?
Reason
a) Money in a day
No
We are not told his fare.
b) Trips in 7 days
Yes
8 × 7 = 56 trips
c) Time for one trip
No
We are not told how long a trip takes.
d) Trips in 4 weeks
Yes
4 weeks = 28 days, 8 × 28 = 224 trips
Only the questions about trips use the given fact.