Question

How many hours are required by A and B to finish creating 110 documents if they are working together. given :in 6 hour to create 32 documents we need 5 hours to create 40 documents.

Answer 1

A neeed 6 hours to create 32 documents.

B need 5 hours to create 40 documents.

x = no: documents create by A in 1 hour,

x = 32 /6 = 16/3 = 5.33 documents in 1 hr.

y= no: documents create by B in 1 hour,
​​​
y= 40/ 5 = 8 documents in 1 hr

if They work together no: documents create in 1 hr,

x+y= = 5.33 + 8 = 13.33 documents.

.˙. no: hours required for create 110 documents = 110 / 13.33 = 8.25 hours

8.25 hrs required for A and B together to create 110 documents.