3
In the given figure,x:y::3:4. Find y.
140°
If 4a = 5b, find b.
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Step-by-step explanation:
let x and y be 3a and 4a
3a +4a = 140
7a = 140
a= 140 /7
a = 20
y = 4 × 20 = 80
4a = 5b
b = 4a / 5
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