Homework Help: math

Posted by TUHITUHI on Friday, August 10, 2012 at 5:14am.

a merchant buys 2 quantities of rice at rs.60 and rs.40 per kg respectively.he pays at total of rs.10000. on the other hand he had paid a flat rate of rs.50 per kg. he would have paid 10% more. how many kg of each type of rice did he buy?

math - Reiny, Friday, August 10, 2012 at 8:46am
let the amount of rice at rs.60 be x kg
let the amount of rice at rs.40 be y kg

60x + 40y = 10000 ---> 3x+2y = 500
50(x+y) = 11000 -----> x+y = 220 or y = 220-x

sub back into the 1st
3x + 2(220-x) = 500
3x + 440 - 2x = 500
x = 60 , then y = 220 - 60 = 160

check:
60(60) + 160(40) = 10000 , check!
50(220) = 11000 , check!

Answer this Question

Related Questions

math - a merchant buys 2 quantities of rice at Rs60 and Rs40 per kg respectively...
math - Gorang bought 60kg apples at Rs 48 per Kg. he sold 70% of the apples at ...
mathematics - A farmer buys a tracter for Rs 120000. he pays Rs 60000 cash and ...
financial accounting and reporting - january 01,2007 Mr.A started a business ...
cost finance - 1. X is the manufacture of Mumbai purchased three chemicals A, B ...
Math - Q) Hasan buys two kinds of cloth materials for school uniforms, shirt ...
Math - A grocer purchased 50kg salt at the rate of rs.8 per kg and mixed it wid ...
accounting ..urgent pls - can you help please.. PROB 1: A, B and C shared the ...
maths - A girl buys 9 apples for Rs.9.60 and sells that at 11 for Rs. 12. What ...
college - an investor is looking for 4 year investment.the share of skylark ...

For Further Reading

First Name:
School Subject:
Answer: