Dr frost

Question 1

Write 9:21 in its simplest form.

Answer 1

3:7

Question 2

Write 30:54:18 in its simplest form.

Answer 2

5 : 9 : 3

Question 3

Write the ratio 3.3 kg : 1100 g in its simplest form.\

Answer 3

3: 1

Question 4

Write 80cm : 4m in the form 1: n.

Answer 4

1 : 5

Question 5

Divide 27 in the ratio 7:2

Answer 5

a)21
b) 6

Question 6

Share £160 in the ratio 4 : 6 : 6

Answer 6

a)40
b)60
c)60

Question 6

There are yellow and black counters in a bag in the ratio 10:9

There are 18 black counters.

Calculate the number of yellow counters.

Answer 6

20

Question 7

Elsa, Amina and Meriem share a sum of money in the ratio 5 : 11 : 17

Amina got £30 more than Elsa.

Calculate how much Elsa received.

Answer 7

25

Question 8

A train travels 257.5 miles in 90 minutes.
The train travels at a constant speed.

Find how far the train travels in 30 minutes.

Answer 8

82.5

Question 9

It takes a group of workers 110 hours to dig 55 holes.

Find how long it would take the same group, working at the same rate, to dig 132 holes.

Answer 9

264

Question 10

It takes a group of workers 280 hours to dig 40 holes.

Find how long it would take the same group, working at the same rate, to dig 28 holes.

Answer 10

196