RATIOS C5

If 7: 5 = 14 : B; Find the value of B.

Solution

7   =  14                            [cross multiply]

5        B

7 x B = 5 x 14

7B = 70

7B = 70                      [divide by 7 on both sides]

7        7

B = 10

Hence the value of B is 10

TRY THIS…………

If 10:4 = 14: y; Find the value of y.