[180] Three fifth of one fourth of a number is 90. The number is?

For Competitive Exams

Three fifth of one fourth of a number is 90. The number is?

Solution:
Let the number be y
Three fifth of one fourth of a number is 90.
⇒ 3/5 x 1/4 x y = 90
Evaluate LHS:
⇒3/20 y = 90
Multiply both sides by 20:
⇒ 3y = 1800
Divide both sides by 3:
⇒ y = 600
The number is 600.

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