If 9 examiners can examine a certain number of answer books in 12 days, working 5 hours a day; for how many hours a day would 4 examiners have to work in order to examine twice the number of answer book is 30 days?

Created: 6 years ago | Updated: 3 years ago

Updated: 3 years ago

Bangladesh Development Bank Ltd Bangladesh Development Bank Ltd - Officer - 28.03.2014 গণিত ঐকিক নিয়ম (Unitary method)

Des

556

Best Ans:

Hints: 9 examiners in 12 days × books working 5 hr/day

1 examiners in 1 days 5×9×12 hr/day

4 examiners in 30 days 2x = (5×9×12×2)/(4×30) = 9 hr/day

6 years ago

0 0

Md Azizur Rahman

FOUNDER OF SATT

গণিত

Content added by

Content updated By