Question

8 men and 6 boys can do a work in 25 days 10 nen and 15 boys can do it in 16 days.How many days will 1 man and 1 boy take to finish?​

Answer 1

8 men or 12 boys ( according to question)

I can write 8 men = 12 boys

1 man= 12/8 boys

1 man = 3/2 boy( this is how we have to transform men into boy or boy into man)

“6 men and 6 boy”

So,6 × 3/2 boy + 6 boy ( as 1 man = 3/2 boy)

9 boy + 6 boy = 15 boy

For this type of math we have a very famous MDH formula

Man × day ×hours / work = man2 × day2× hours 2 / work2

Here we know only boys (or man) and day so,

12×20=15 ×day

Day= 12×20/15

Day= 16

( Hope it helps)