RATIOS A4

If 3: 8 = 10:B; Find the value of B.

Solution

3   =  10                            [cross multiply]

8        B

3 x B = 10 x 8

3B = 80

3B = 80                      [divide by 3 on both sides]

3        3

B = 26²/3

Hence the value of B is 26²/3