A and B can do a piece of work in 9 days, B and C in 12 days, A and C in 18 days. If all of them work together, then how much time will they take to finish the same work?
Created: 6 years ago |
Updated: 2 years ago
best des
(A + B + B + C + C + A) একত্রে 1 দিনে করে = ( 1/9 + 1/12 + 1/18) অংশ
2 ( A + B + C) একত্রে 1 দিনে করে = ( 12 × 18) + ( 9 × 18) + ( 9 × 12)/ 9 × 12 × 18
( A + B + C) একত্রে 1 দিনে করে = ( 216 + 162 + 108) /( 2 × 9 × 12 × 18) = 486/ 18 × 18 × 12
A, B, C একত্রে কাজটি করে = (18 × 18 × 12)/486 = 8 দিনে।
Md Azizur Rahman
Founder of Satt
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