Correct Answer - Option 2 : 20160
Given:
Total earning = 84960
A earns 70% of B’s
B earns 80% of C’s
Formula used:
X% of Y = (X × Y)/100
Calculation:
Let C’s earning is N.
So according to question
⇒ N + N × 0.8 + N × 0.8 × 0.7 = 84960
⇒ N (1 + 0.8 + 0.56) = 84960
⇒ N = 84960/2.36
⇒ N = 36000
So C’s earning is 36000.
Now, A’s earning = 36000 × 0.8 × 0.7
⇒ 20160
∴ A’s earning is Rs.20160.