Question

किसी कार्य को 7/10 भाग को A 15 दिन में पूरा करता है. उसके पश्चात वह B की सहायता से शेष कार्य को 4 दिन में पूरा करता है. पुरे कार्य को A तथा B मिलकर कितने दिन में पूरा करेंगे?​

Answer 1

Answer:

40/3

Step-by-step explanation:

Given A completes 7/10 of a work in 15 days. After that, with the help of B, he completes the remaining work in 4 days. In how many days will A and B together complete the work?

Now 7/10 part of work is completed by A in 15 days.

So rest of the work will be

1 – 7/10 = 3/10 of work.

Now 3/10 work will be completed in 4 days.

A + B together completed 3/10 of work in 4 days.

So (A + B)’s 1 day’s work will be 3/10 x 4 = 3/40

Therefore A + B can complete the work in 40/3 days.