Question

ajay can harvest the crop in 9 days. his brother needs 15 days to complete the same task. if ajay works on the first day, his brother works on the second day, ajay works again on the third day, his brother works on the fourth day, and so on. how many days does it take to harvest 4/5 of the crop?​

Answer 1

Answer:

11

Step-by-step explanation:

Let Ajay be : A1

and Brother be : A2

A1 takes 9 days to harvest All the crops

A2 takes 15 days

The formula is

$lcm \: of \: 9 \: and \: 15 = 45 \\ 45 \div 4 = 11$

Checking:

$15 \: - (9 - 5) = 4 \: and \: 11 + 4 \: should \: equal \: 15$

And the '5' in (9-5) comes from the question (4/5)