Question 77

Mother can bake 20 cakes in 4 hours, Mother and Dadima together can bake 60 cakes in 10 hours. How many cakes Dadima can bake in 30 hours?

Solution

Cakes baked by Mother in 1 hour = $$\frac{20}{4} = 5$$

Cakes baked by Mother and Dadima together in 1 hour = $$\frac{60}{10} = 6$$

=> Cakes baked by Dadima in 1 hour = 6 - 5 = 1

$$\therefore$$ Cakes baked by Dadima in 30 hours = 30 $$\times$$ 1 = 30

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