Question

Rio and Chi go to a fruit shop.
Rio buys 4 apples and 2 plums for $1.96 .
Chi buys 7 apples and 3 plums for $3.24 .
Write down a pair of simultaneous equations and solve them to find the cost of 1 apple and the cost of 1
plum.

Answer 1

Answer:

Let the cost of 1 apple be a and cost of one plum be p, then it is given

4a+2p=1.96 equation 1

7a+3p=3.24 equation 2

multiply eq 1 by 3 and equation 2 by 2 and then subtract eq 1 from eq 2, you will get

14a -12a=2×3.24-3×1.96

2a =6.48-5.88=0.60

a=0.30

put this value of a in any of the above equations, you will get

p=0.38