Willy bought 15 pears and Jack bought 18 oranges. They spent the same amount of money. The difference in cost between a pear and an orange was $0.10. How much did Willy spend on the 15 pears?
+486 HINT: Write cost of orange as cost of pear - $0.10$ and set up a system of equations.
+36915 15 (r+10) = 18 (r) r = price of orange
150 = 3r
r = 50 so 18 oranges is 9 dollars ( the same price as 15 pears)
1 orange + $0.10
(1 orange + $0.10) * 15
= 15 pears + ( 15 * $0.10)
= 15 pears + $1.50
15 pears + $1.50 = 18 oranges (Cost of 15 pears = Cost of 18 oranges)
18 oranges - 15 pears = 3 oranges
3 oranges —> $1.50
1 orange —> $0.50
1 pear —> $0.50 + $0.10 = $0.60
15 pears —> $0.60 * 15 = $9
Willy spent $9 on the 15 pears.
