Question

One country has 12 stone bridges and 20 steel bridges. What is the ratio of ? A. Stone bridges to steel bridges. B. Steel bridges to stone bridges. C total bridges to steel bridges.

Answer 1

A (Stone to Steel bridges)= 3:5

B (Steel to Stone bridges)= 5:3

C (Total bridges to steel bridges)= 8:5

Explanation:

A: Stone to steel bridges is

12:20

You can simplify that by dividing by 4 on both numbers:

3:5

So the ratio of stone to steel bridges is 3:5

B: Steel to stone bridges is

20:12

You can simplify that by dividing by 4 on both numbers:

5:3

So the ratio of stone to steel bridges is 5:3

C: Total bridges to steel bridges is

What is the total number of bridges?

20+12=32

32:20

You can simplify that by dividing 4 on both numbers:

8:5

So the ratio of the total number of bridges to steel bridges is 8:5

Hope this helps!

Answer 2

A. Stone bridges to steel bridges=

12 : 20

6 : 10

3 : 5

answer = 3 : 5

B. Steel bridges to Stone bridges

20 : 12

10 : 6

5 : 3

answer = 5 : 3

Total bridges = 20+12=32

C. Total bridges to steel bridges

32 : 20

16 : 10

8 : 5

answer = 8 : 5