Question : Sister can bake 50 cakes in 25 hours, and Sister and Mummy together can bake 75 cakes in 15 hours. Mummy can bake in 15 hours?

Option 1: 25

Option 2: 45

Option 3: 20

Option 4: 10

Question : Akka can bake 100 cakes in 20 hours. Akka and Tai together can bake 75 cakes in 10 hours. How many cakes Tai can bake in 20 hours?

Option 1: 25

Option 2: 50

Option 3: 30

Option 4: 75

Question : Aditya can complete a grill painting job in 20 hours, while Vinay can complete the same work in 15 hours. If Aditya and Vinay both work together, then in how many hours will the painting work be completed?

Option 1: $10 \frac{2}{3}$ hours

Option 2: $10$ hours

Option 3: $12$ hours

Option 4: $8 \frac{4}{7}$ hours

Question : If 50 boys can finish a work in 30 days by working 6 hours per day, then how many hours per day should 25 boys work to finish that work within 24 days?

Option 1: 18 hours

Option 2: 10 hours

Option 3: 12 hours

Option 4: 15 hours

Question : P can fill a tank in 5 hours, and Q can fill the same tank in 10 hours. R can empty the same tank in 20 hours. How much time will all the three take together to fill the same tank?

Option 1: 10 hours

Option 2: 4 hours

Option 3: 6 hours

Option 4: 5 hours