R did 2/3 part of a work on first day. He did 1/4 part of the remaining work on second day. If the total work is 84 units, then how much work (in units) is remaining now?
Show answer & explanation
Correct answer: D
Explanation
Total work = 84 units
Remaining work after the first day = 84 × 1/3= 28
Work done on the second day = 28 × 1/4= 7
Remaining work = 28 - 7= 21