Two friends can complete a piece of work in 5 days.If the first friend can alone complete the same work in 15 days,how many days the second friend take to complete the work alone?
Answers
Answered by
12
2 friends done work in 1 day =1/5 of work
first friends done work in 1 day=1/15 of work
let 2nd done work in one day =x
hence 1/5=1/15+x
x=1/5-1/15
lcm=15
so 3-1/15=2/15
in one day 2nd do 2/15 piece of work
so in 15 days she do double work
so work is done in=15/2= 7.5 days
verifying=2/15+1/15=2+1/15
3/15=1/5
pls mark this answer brainliest
first friends done work in 1 day=1/15 of work
let 2nd done work in one day =x
hence 1/5=1/15+x
x=1/5-1/15
lcm=15
so 3-1/15=2/15
in one day 2nd do 2/15 piece of work
so in 15 days she do double work
so work is done in=15/2= 7.5 days
verifying=2/15+1/15=2+1/15
3/15=1/5
pls mark this answer brainliest
karaniadeepa:
sorry ........ but wat's the answer?how many days:7.5,8,6 or 9 days?
sry for the mistake i corrected it
thank u so much
ur welcome
Similar questions