Q106 of 113 Page 110

Jusum buys some chocolates at the rate of Rs. 10 per chocolate. She also buys an equal number of candies at the rate of 5 per candy. She makes a 20% profit on chocolates and 8% profit on candies. At the end of the day, all chocolates and candies are sold out and her profit is Rs. 240. Find the number of chocolates purchased.

Let Jusum purchased x chocolates

Total cost of chocolates = Rs. 10x


Similarly, she purchased x candies


Total cost of candies = Rs.5x


According to the question


Profit on chocolates = 20% of 10x = 20/100 × 10x = Rs. 2x


Profit on candies = 8% of 5x = 8/100 × 5x = Rs. 0.4x


∴Total profit = 2x + 0.4x = Rs. 2.4x


But it is given that total profit is Rs. 240


According to the question


2.4x = 240


x = 100


(divide by 2.4 on both the sides)


Hence she purchased 100 chocolates


More from this chapter

All 113 →
104

Denominator of a number is 4 less than its numerator. If 6 is added to the numerator it becomes thrice the demoninator. Find the fraction.

 105

An employee works in a company on a contract of 430 days on the condition that he will receive Rs. 120 for each day he works and he will be fined Rs. 10 for each day he is absent. If he receives Rs. 2300 in all, for how many days did he remain absent?

 107

A steamer goes downstream and covers the distance between two ports in 5 hours while it covers the same distance upstream in 6 hours. If the speed of the stream is 1 km/hr, find the speed of the steamer in still water.

 108

Distance between two places A and B is 210 km. Two cars start simultaneously from A and B in opposite direction and distance between them after 3 hours is 54 km. If speed of one car is less than that of other by 8 km/hr, find the speed of each.