Question

A and B can do a piece of work in 72 days, B and C can do it in 120 days, A and C can do it in 90 days. In what time can A alone do it​

Answer 1

Answer:

⚠ _ Hello _ ⚠

Step-by-step explanation:

⚫ Solution ⤵

1 day work of A&B

➡ 1/72 days

1 day work of B&C

➡ 1/120 days

1 day work of A&C

➡ 1/90 days

❇ if they work together

◼ 1/72 + 1/120 + 1/90 = 5+3+4/360

➡ 12/360

they can do a piece of work in 360/12 days

i.e., 30 days

12/360 - work of B&C

12/360 - 1/120

12- 3/360

9/360= work of A

❇360/9 => 40 days

Thus, A can do a piece of work in 40 days

⭐⭐ Hope it's help⭐⭐

Answer 2

Answer:

40 days✔

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