Question

In a class there are 15 boys and 25 girls. Find the ratio of:
a) Boys to girls.
b) Girls to total students.
c) Boys to total students.
Q-2 Express the following in the simplest form.
a) 2 hours 15 minutes to 1 hour 5 minutes
b) 450g to 3.5 kg
c) 330mL to 1.1L
Q-3 Find x if 3:x::15:75
Q-4 If cost of a dozen bananas is Rs 54, find the cost of 28 bananas?
Also, find how many banans can be bought in Rs 135?
Q-5 If a car can cover 130 km in 2 hours.
a) How much time will it take to cover 585 km?
b) How far will it go in 7 hours?
(use unitary method only for Q-4 and Q-5)

Answer 1

Answer:

a) 15:25= 3:5

b) 25: 40= 5:8

c) 15: 40= 3:8

2a) 135 : 65 minutes (I guess)

b) 0.45: 3.5 kg

c) 0.33: 1.1 l

3) x=15

4) Cost of 28 bananas is Rs 126. 30 bananas can be bought in Rs 135

5a) 38025 hr

b) 455km