Question

two car mechanics ram and shyam working together can overhaul a car in 3 days. ram working alone can do the job in 5 days. if shyam works alone, how long will he take to do the same job?

Answer 1

ram can do job in 5 days
therefore in 1 day he can do 1/5 th job

let shyam do job in. x days
therefore in one day shyam does 1/x job

ram and shyam do job on 3 days
therefore in 1 day they can do 1/3 rd job combined together

1/5+1/x=1/3

(x+5)/5x=1/3

3(x+5)=5x

3x+15=5x

15=2x

x=7.5 days

Answer 2

Answer:

Step-by-step explanation:

ram can do job in 5 days

therefore in 1 day he can do 1/5 th job

let shyam do job in. x days

therefore in one day shyam does 1/x job

ram and shyam do job on 3 days

therefore in 1 day they can do 1/3 rd job combined together

1/5+1/x=1/3

(x+5)/5x=1/3

3(x+5)=5x

3x+15=5x

15=2x

x=7.5 days