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 - A dealer bought 5 quintals of rice for Rs.19 per kg paid Rs.500 on ...
- math check - 1.)Jenna earns $16,250 per year. She pays 6% of her earnings to her...
- Econ - Assume that American rise sells for $100 per bushel, Japanese rice sells...
- Microecomics - Assume that American rise sells for $100 per bushel, Japanese ...
- math - Michael has a total of $2000 on deposit with two saving institutions. One...
- algebra - mrs.Goh bought 4 bags of rice at $5.28 per bag ,5 packets of biscuits ...
- eco - Assume that American rice sells for $100 per bushel, Japanese rice sells ...
- macroeconomics - assume that American rice sells for 100.00 per bushel, japanese...
- math - Formulate but do not solve the problem. Michael Perez has a total of $...

More Related Questions