5 boys or 3 girls can do a science project in 40 days. How long will it take for 15 boys and
6 girls to do the same project?
Answers
Answered by
0
they need 20 days to do the same project
Answered by
0
Given that 5 boys or 3 girls can do a science project in 40 days .
Let the total work be x units .
5 boys can do the work in 40 days .
1 boy can do the work in 200 days.
Work done by 1 boy in one day = x/200
3 girls can do the work in 40 days .
1 girl can do the work in 120 days.
Work done by 1 girl in one day = x/120
Work done 15 boys and 6 girls in one day = (15x/120) + (6x/120)
= x/8
x/8 work is done in 1 day .
x work is done in = 8 days.
15 boys and 6 girls will take 8 days to complete the work.
Similar questions