Ratio, Proportion

Quantitative Aptitude (CHSL)

Title

45:30

8 of 24 completed

5 of 15 completed

38 of 100 completed

8 of 20 completed

Indian Economy - Understanding the basics of Indian economic system

If P : Q = 10 :11 and Q : R = 11 : 12, then P + Q : Q + R : R + P is:

This questions was previously asked in

SSC CHSL 26th May 2022 Shift-1

21 : 23 : 22

22 : 21 : 23

11 : 12 : 10

23 : 22 : 21

- We are given P : Q = 10 : 11, so P/Q = 10/11. Assume P = 10x and Q = 11x.

- Also, Q : R = 11 : 12, so Q/R = 11/12. Assume Q = 11y and R = 12y.

- Match the common term Q: from 11x = 11y, we get x = y.

- So, P = 10y, Q = 11y, R = 12y.

- Now, calculate P + Q = 10y + 11y = 21y.

- Calculate Q + R = 11y + 12y = 23y.

- Calculate R + P = 12y + 10y = 22y.

- Therefore, P + Q : Q + R : R + P = 21 : 23 : 22.

- Option 1 (21 : 23 : 22) is the correct answer.