Question

Daniel and his children went into a grocery store and he bought $18 worth of apples and bananas. Each apple costs $2.25 and each banana costs $0.90. He bought a total of 14 apples and bananas altogether. By following the steps below, determine the number of apples, x,x, and the number of bananas, y,y, that Daniel bought.

Answer 1

disregarding the repeated use of the variable names, we have
2.25x + 0.90y = 18.00
x+y = 14
since y = 14-x, we have
2.25x + 0.90(14-x) = 18.00
x = 4
y = 10