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Let the speed of boy = x kmph According to the question, Distance travelled by bus in 12 min with 20 kmph = Distance travelled by boy in 10 min with (20 + x) kmph in opposite direction => 20 × 12/60 = 10/60 (20 + x) => 240 = 200 + 10x => x = 40/10 = 4 kmph.
What was the difference between the number of medium and large sized pizza baked on the day when the shop baked the maximum number of pizzas?
What is the difference between the number of all pizzas sold by Pizza Hut in the first week and the fourth week?
If the ratio of number of wallets sold by store D on Monday and Friday is 7:13 respectively, then find the number of wallets sold by D on Friday.
What is the total number of all pizzas sold in the first two weeks?
Find the difference between the total number of red pens sold by A and E together and number of blue pens and green pens sold by B.