Question

Solve each of the following equations.
i. Given that a : b : c = 75 : 120 : 132 [1]
a. Find b : a
b. Find b : c

Answer 1

GIVEN :-

• a :b : c = 75 : 120 : 132

TO FIND:-

• b : a
• b : c

SOLUTION:-

a :b : c = 75 : 120 : 132

➠ b : a

➠ 120 : 75

➠ 15 × 8 : 15×5

➠ 8 : 5

So, b:a is 8:5

_____________________________

➠ b : c

➠ 120 : 132

➠ 2×60 : 2× 66

➠ 60 : 66

➠ 2 × 30 : 3 ×22

➠ 30 : 22

➠ 2 × 15 : 2× 11

➠ 15 :11

So, the ratio of b:c is 15:11