Question

Ravi is four times more efficient than ram and can finish his work in 10 days. if they started working at the same time then in how many days they will complete the work together​

Answer 1

Answer:

no.of days they will complete the work together =8 days

Answer 2

Ravi and Ram can complete the work together in 3 1/3 days

Given:

Ravi is four times more efficient than Ram

Ram can finish a work in 10 days

To find:

If they started working at the same time then, the number of day they will take to complete the work  

Solution:

Given that Ram can complete a work in 10 days

⇒ The work can be completed by Ram in one day = $\frac{1}{10}$  

Ravi is 4 times more efficient than

⇒ The work can be done by Ravi one day = $4(\frac{1}{10} )$ = $(\frac{2}{5} )$

If they started working together

The work can be done by both in 1 day =$\frac{1}{10}+\frac{2}{5}$ =  $\frac{3}{10}$  

If they can do $\frac{3}{10}$ th of the work in 1 day

The number of days to complete 1 work = $\frac{1}{ \frac{3}{10} }$ = $\frac{10}{3}$ = 3 1/3 days

Ravi and Ram can complete the work together in 3 1/3 days

#SPJ2