SOLUTION: on a shop, two different types of sugar packets are sold, which costs 50 Rs each and 70 Rs each, respectively. If the shopkeeper sales 60 packages and have a total revenue of 3200.

Question 830907: on a shop, two different types of sugar packets are sold, which costs 50 Rs each and 70 Rs each, respectively. If the shopkeeper sales 60 packages and have a total revenue of 3200. How many packets he sold of 50 Rs?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
x for how many of the 50 Rs priced
y for how many of the 70 Rs priced

x+y=60 according to the description;
50x+70y=3200 also described. Simplify this one to 5x+7y=320.

Solve the system for x and y.
---------------
x+y=60
---------------
5x+7y=320
---------------

One way is multiply the package count equation by 5 and subtract from the revenue equation:

5x+7y-(5x+5y)=320-5*60
2y=20
y=10, meaning that x=50
RELATED QUESTIONS
A shopkeeper has 4 types of cooking oil which are Rs.70,Rs.90, Rs100 and 150 per each... (answered by palanisamy)

70 coins of 10 paise and 50 paise are kept in a purse. If yhe total value of the money in (answered by FrankM)

A shopkeeper buys a number of packets of biscuits for Rs.80.If had bought 4 more packets... (answered by sachi)

Total Value of gifts is Rs.3000, in which total number is 63, which has two types like... (answered by Cromlix)

wahid purchase 8 textbook each costing rs 12 and 4 story books each costing rs 9 find... (answered by fractalier)

PROBABILITY DISTRIBUTIONS (Binomial and Poisson) ABC company estimates the net profit... (answered by richard1234)

A lady has only Rs. 1 and Rs.2 coin in her purse. If in all she has 50 coins totalling... (answered by Edwin McCravy)

A carpenter undertakes to supply 2000 tables at Rs. 17.25 each. He estimates that if 10%... (answered by richwmiller)

A grocer wishes to make 50 kilos of tea by mixing two grades of tea worth Rs. 16 and... (answered by TimothyLamb)