If a : b = 5 : 7, find (7a+3b) : (5a-2b).

Options
- 5 : 7
- 8 : 11
- 56 : 11
- 11 : 8

CORRECT ANSWER : 56 : 11

Discussion Board
Maths

Good meathead

Tanvi 10-15-2023 06:54 AM

answer



a : b = 5 : 7, find (7a+3b) : (5a-2b)

Substituting a and b ratio values :
(7*5+3*7):(5*5-2*7)=56:11


maggi 08-1-2020 11:52 AM

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