Question

if twelve machines working 7 hrs a day can finish a work in 18 days in how many days will 16 machine working 9 hrs a day finish twice the work?

Answer 1

21 days

Solution:-

let number of days be x.

machines hours days quantity

(↓). (↓). (↑). (↑)

12. 7. 18. 1

16. 9. x. 2

____________________________

x/18 = (12/16)×(7/9)×(2/1)

x = (12×7×2×18) / (16×9×1)

x = 21 days

Answer

hope this helps you

Answer 2

Love you meri jaanu