P got 25 percent less marks than Q. R got 40 percent less marks than Q. If sum of P, R and Q marks is 1410, then what is the difference between the marks of Q and R?
Show answer & explanation
Correct answer: B
Explanation
Q = 100%
P = 75%
R = 60%
Total = 75+100+60 = 235%
235% = 1410
1% = 1410/235 = 6
Q – R = 40%
= 40 × 6 = 240