Question

if 4/7 of a work is completed in 7/4 days, In how many days will the rest of the work be completed​

Answer 1

let total work be. k

then 4k/7 of work is completed in 7/4 days

let the remaining work 3k /7 will be completed in D days

4k/7:7/4 =3k/7 : D

4/7 : 7/4 = 3/7 :D )

( 4/7 ) D = (3/7)(7/4)

(4/7)D =3/4

D =(3/4)(7/4) =21/16

21/16 days

Answer 2

Answer:

reciprocal the first fraction = 7/4

Work not completed = 7/7-4/7=3/7

7/4×3/4=21/16

21/16 is the right answer