If a:b = 4:5, then find the value of (8a - CUETMOCK

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Ratios

Question:

If a:b = 4:5, then find the value of (8a-5b) : (7a -4b).

Options:

7:9

7:10

8:7

7:8

Correct Answer:

7:8

Explanation:

a : b = 4 : 5

ATQ,

(8a - 5b) : (7a - 4b) = (8 × 4 - 5 × 5) : (7 × 4 - 4 × 5)

= 7 : 8

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