Question

Sahir can do a work 3 times faster than Navish. If Sahir takes 20 days less than Navish to complete the work, then how much time Navish will take to do the work ?

Answer 1

Navish = x days of work
Sahir = x/3 days of work(because he’s 3 times faster than Navish)
We know that sahir took 20 days so we replace it. Thus
20= x/3
60=x
Therefore navish took 60 days to work

Answer 2

Let's assume Navish takes "x" days to complete the work.

Then, Sahir takes "x/3" days to complete the work as he is three times faster than Navish.

As per the problem, Sahir takes 20 days less than Navish to complete the work. So, we can write:

x - 20 = x/3

Multiplying both sides by 3, we get:

3x - 60 = x

Simplifying the above equation, we get:

2x = 60

x = 30

Therefore, Navish takes 30 days to complete the work.