Question

Rajan can do a piece of work in 10 days and Sonu alone can do it in 15 days in how many days will Rajan and Sonu can do the same work​

Answer 1

Answer:

Let us assume that Rajan =A,      and Sonu is=B    for typing purpose :-)

Step-by-step explanation:

you can assume a number and assign it to the amount of work needed to be completed. The best way to assume the number is to take the LCM of no. Of days which both A and B are taking.

Here, you can take the LCM of 15 and 10. Which is 30.

Now, this 30 is the amount of work which is required to be completed.

Now, if A is completing it in 10 days, which means, he is doing 3 units of work everyday.

Similarly, B is doing 2 units of work everyday to complete it in 15 days.

So, if they will work together, they will complete 3+2=5 units of work everyday.

Now, assume they complete the work in x days.

So, x*5=30->x=6

Hope You Got it

Have A Great Day !!!!!!!!!!!!iiiiii

Answer 2

Answer :-

6 days

Step-by-step explanation:

$work \: do \: by \: rajan \: = \frac{1}{10}$

$work \: done\: by \: sonu \: = \frac{1}{15}$

l

$\frac{1}{10} + \frac{1}{15} = \frac{3 + 2}{30} = \frac{1}{6}$

Hope this answer helped you out, have a nice day