Question

the rate of working of A and B are in the ratio 3 is to 4 the number of days taken by them to finish the word card in the ratio ​

Answer 1

Answer:

4:3

Step-by-step explanation:

The ratio of number of required to complete a work will be just opposite of ratio of rate of working.

Answer 2

Answer:

12/7 days

Step-by-step explanation:

Given, rate of working of A and B are in ratio 3 and 4,

so rate of doing work by A=3

and by B=4.

Both of them complete the work in 1 day is=(1/3)+(1/4)=7/12

so both take 12/7 days of time to complete the given work.