Question

A boy bought four roti and five patties for $317.50.if he had bought five rot is and three patties, then he would have paid $340.00.
A. Write two equations in terms of r and p to represent this information.
B. Hence, love the equations simultaneously to determine the value of:
1. the cost of one roti
2. The cost of one patty

Answer 1

Answer:

hhhhhhhhhhhh have to be a good morning

Answer 2

Step-by-step explanation:

equations

4r+5p = 317.50

5r+3p = 340

using elimination method

20r + 25 p = 1587.5

20r + 12 p = 1360.5

13p = 227.5

p = 227.5÷13 = 17.5

putting value of p in any equation

5r +3(17.5) =340

5r + 52.5 = 340

5r = 340 - 52.5

r = 287.5÷5

r = 57.5

cost of 1 pattie = 17.5$

cost of 1 roti = 57.5$