Question

Raj does a work in 5 days while Salim does the same work in 2 days . If they work together, in how many days will they complete the work?

Answer 1

Time taken by father to do a piece of work = 5 Days

Same thing to be performed by son = 3 Days

Time taken by son = x

The LCM of 3 and 5 = 15

1/5 - 1/3

= 2-5/15

= 3/15

= 1/5

Hence the job will be done in 7.5 Days

Hope this helps you

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Answer 2

Step-by-step explanation:

Raaz does a work in 5 days

Salim does the same work in 2 days:

they they are half word Raaz and half work did Salim

now,

$divide \\ 5 \div 2 = 2.5 \\ 2 \div 2 = 1 \\ subtracted \\ 2.5 - 1 = 1.5 \\ i \: hope \: helpful \: for \: you$