Q8 Please ans fast experts exams are their Q 8 â ‹A can complete work in 20 - Maths - Comparing Quantities

Question

Q8 Please ans fast experts exams are their

Q 8 â€‹A can complete
work in 20 days After 2 days B joins to work with A If B alone can
do work in 15 days, how many days would it take both to finish the
remaining work

Shruti Tyagi · Accepted Answer

Dear students,

Total work= LCM of 20 and 15 2 20, 15 2 10, 15  55, 15   3 1, 3      1 , 1L
C
M=2×2×5×3=120Work done by A in 1 day=12020=6Work done by B in 1 day=12015=8Acc
 to question,Let x be the no
 of days in which A and B complete the remaining workWork done by A in 2 days+Work done by A and B together in x days=120⇒2×6+x×6+8=120⇒12+14x=120⇒14x=120-12⇒14x=108⇒x=10814⇒x=10814=7
714≃8 daysThus, it takes 8 days by both A and B to finish the remaining work

Regards

Q8 Please ans fast experts exams are their Q.8. ​A can complete work in 20 days. After 2 days B joins to work with A. If B alone can do work in 15 days, how many days would it take both to finish the remaining work.

Q8 Please ans fast experts exams are their

Q.8. A can complete work in 20 days. After 2 days B joins to work with A. If B alone can do work in 15 days, how many days would it take both to finish the remaining work.