Question

Rajan is thrice as effictive as ravi and takes 10days less to do a piece of work than Ravi to do the same piece of work. In how many days can ravi alone finish the whole work​

Answer 1

Answer:

RAVI= 5 days and RAJAN= 15 days

Step-by-step explanation:

LET'S TAKE RAJAN AS A AND RAVI AS B

B=3A

=A+10

so,

3A=A+10

2A=10

A=5

A takes 5 days; B takes 3A, or 15, days i.e. rajan takes 5 days and ravi takes 15 days.

Answer 2

Let efficiency of Ravi be x

Then Rajan's efficiency=3x

Time is indirect to efficiency so Ravi takes 3t and Rajan take t time

3t-t=10

t=5days

So Ravi takes 15 days to complete the work