CBSE Class 8 Answered

John had a certain number of cupcakes to deliver in 3 different places. At a bakery, he delivered half of the cakes, then at a school canteen he delivered half of the remaining cupcakes and then delivered half of the remaining cakes at a restaurant. If he is left with 80 cakes, how many cakes did he have initially? 

Total no of cupcakes = x

At Bakery = 1/2 x

At school canteen = 1/2 of remaining 1/2 x cupcakes were delivered = 1/4 x

At restaurant = 1/2 . 1/4 x = 1/8x

Remaining cupcakes = 80

Take LCM and solve this further, we get