Question

Anand, Bhanu and Chandra can complete a work in 4 days. Anand and Chandra can do the same work in 8 and 16 days respectively. How many days will Bhanu alone take to complete the same work?​

Answer 1

Step-by-step explanation:

If Amit does the job in 9 days, how much does he do in one day? (Hint: 1/9)

If Bhanu does the job in 18 days, how much does he do in one day? (Hint: 1/18)

If Amit does 45% of his usual daily total when sick, how much does he do in one day when sick? (Hint: (1/9)*(45/100))

If Bhanu does 90% of his usual daily total when sick, how much does he do in one day when sick? (Hint: (1/18)*(90/100))

How much then do they complete together in one day, when they’re both sick? (Hint: Add.)

Then how many days will they need to complete the job? (Hint: Invert.)