Question

3. Rita and Neha can do certain work
individually in 20 hours and 25 hours,
respectively. How much time will it take,
if they work together to complete the
work?




answer is 11 hour​

Answer 1

Answer:

answer: 100/9 , 11 1/9

step-by-step explanation:

rita-20

neha-25

lcm of 20,25=100

so,

total work = 100

rita work in 1 hour=100/20= 5

neha work in 1 hour=100/25= 4

both work together

work in one hour = 9

time taken to complete = 100/9 = 11 1/9

Hope it helps!!

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Answer 2

Answer:

answer is 11 hous 7 minute