If x : y = 3 : 2 and x + y = 90. Then th - CUETMOCK

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Home Questions B6BPDAEEXV

Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Ratios

Question:

If x : y = 3 : 2 and x + y = 90. Then the value 7(x - y) : ( x + y) is :

Options:

7 : 5

2 : 3

7 : 9

7 : 6

Correct Answer:

7 : 5

Explanation:

X : Y

3 : 2

X + Y = 90

⇒ (3 + 2)units = 90

⇒ 5 units = 90

⇒ 1 unit = 18

X = 3 x 18 = 54, Y = 2 x 18 = 36

⇒ 7(x - y) : ( x + y) = 7(54 - 36) : (54 + 36)

⇒ 7(18) : 90

⇒ 126 : 90

⇒ 7 : 5.

CUET Questions