Question

8.
A. B and C do a job in 24 days, 30 days and 40 days respectively. In how many days can they finish
the job if they work together?
b) 11
110
[ ]
a) 8
(
c) 9
d) 10



please answer me ​

Answer 1

Answer:

DAYS LCM=TOTAL WORK. EFFICIENCY

A------24 5

B------30 120 4

C------40 3

LCM OF 24,30,120 = 120

(WORK = EFFICIENCY * TIME)

efficiency = 5+4+3 = 12

total work = 120

SO nO : OF DAYS ALL WORK TOGETHER = 120/12 = 10 DAYS

Answer 2

Answer:A's 1 day work = 1/24 B's 1 day work = 1/30 C's 1 day work = 1/40( A+B+C )'s 1 day work = 1/24+1/30+1/40 . = 12/120= 1/10 . . Time taken by them to finish the job together = 10 Days ( HOPE IT HELPS)