Question 40

Munni can bake 70 cakes in 7 hours, Munni and Guddi together can bake 90 cakes in 6 hours. How many cakes Guddi can bake in 10 hours?

Solution

Cakes baked by Munni in 1 hour = $$\frac{70}{7} = 10$$

Cakes baked by Munni and Guddi together in 1 hour = $$\frac{90}{6} = 15$$

=> Cakes baked by Guddi in 1 hour = 15 - 10 = 5

$$\therefore$$ Cakes baked by Guddi in 10 hours = 10 $$\times$$ 5 = 50

=> Ans - (B)

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