Question

Rakesh can do a piece of work in 80 days and Sanjay in 100 days. They
work together for first 20
days before Sanjay goes away. In how many
days will Rakesh manage to finish the remaining work ?​

Answer 1

Answer:

GIVEN THAT RAKESH CAN DO A PIECE OF WORK IN 20 DAYS AND WE NEED TO FIND THE WORK HE CAN

DO IN 4 DAYS

SO SOLUTION IS➡️➡️

ACCORDING TO QUESTION RAKESH CAN DO

1 PIECE OF WORK IN = 20 DAYS

NOW WE NEED TO FIND AMOUNT OF WORK DONE IN 4 DAYS

SO TO FIND THAT WE NEED TO KNOW WHAT IS 4 IN 20

SO THAT IS

4/20 = 1/5

SO WE FOUND THAT THE 4 IS 1/5 TH OF 20

THEREFORE THE WORK DONE IN 4 DAYS WOULD BE

1/5th of the work

SECOND DIRECT METHOD ( SOLUTION )

THAT IS

ACCORDING TO QUESTION ITS GIVEN THAT

1 WORK CAN BE DONE IN 20 DAYS

THAT IS

1 work= 20 days

SO THE AMOUNT OF WORK DONE IN 1 DAY IS EQUAL TO

1/20th of the actual work

SO WORK DONE IN 4 DAYS WOULD BE

1/20*4

THAT IS

1/5th of actual work

HENCE THE WORK DONE IN 4 DAYS IS EQUAL TO 1/5 TH