R did 7/10 part of a work on first day. He did 2/3 part of the remaining work on second day. If the total work is 90 units, then how much work (in units) is remaining now?
Show answer & explanation
Correct answer: C
Explanation
Given:
Total work = 90 units
According to the formula:
Remaining work = Total work − Work done
Work done on the first day = (7/10) × 90 = 63
Remaining = 90 − 63 = 27
Work done on the second day = (2/3) × 27 = 18
Final remaining = 27 − 18 = 9 units