Question

. Alone, Bela can build a widget in 5 hours. If Jagdish helps her, the two of them can build the widget in 3 hours. How long would it take Jagdish to build the widget himself?

Answer 1

Answer:

7.5 hrs

Step-by-step explanation:

Bela can build a widget in 5 hours

=> Bela 1 hour work = 1/5

Let sau Jagdish Can complete work in J hrs

=> Jagdish 1 hr work = 1/J

Bela + Jagdish 1 hr work  = 1/5 + 1/J  = 1/3

=>1/J = 1/3 - 1/5

=> 1/J = (5 - 3)/15

=> 1/J = 2/15

=> J = 7.5 Hrs

Answer 2

Answer:

7.5 hours is correct answer