Question 25

If 90% of A = 30% of B and B = x % of A, then the value of x is

Solution

Share

Given : 90% of A = 30% of B

=> $$\frac{90}{100} \times A = \frac{30}{100} \times B$$

=> $$9A = 3B$$

=> $$\frac{B}{A} = \frac{9}{3} = 3$$

Also, B = x % of A

=> $$B = \frac{x}{100} \times A$$

=> $$\frac{x}{100} = \frac{B}{A} = 3$$

=> $$x = 100 \times 3 = 300$$

Was this solution helpful?

Get AI Help

View More Questions From Quant

Create a FREE account and get:

  • Download Maths Shortcuts PDF
  • 300+ previous papers with solutions PDF
  • 500+ Online Tests for Free

Book Free CAT Mentorship

Get personalized CAT strategy from a 99%iler

500+ students mentored
CAT mentor

Join CAT 2026 course by 5-Time CAT 100%iler

Start your IIM journey with the right preparation and crack CAT 2026.

Enroll Now
Ask AI