A can do a work in 13 days and B can do the same work in 24 days. If they work on it together for 5 days, then what fraction of the work is left?
Given:
A can finish the work in 13 days
B can finish the work in 24 days
They work together for 5 days
Find the fraction of work left
Formula Used:
Total work = Rate × time
Solution:
Total work = LCM( 13, 24) = 312 units
A’s 1-day work = = 24 units
B’s 1-day work = = 13 units
Work done in 5 days by A and B:
= ( 24 + 13) × 5
= 37 × 5 = 185 units
Remaining Work = 312 - 185 = 127 units
Fraction of work left =
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