Question

An apple sells for 25 cents and a peach sells for 15 cents. a total of 10 pieces of fruit were sold for a total cost of $2.10(210 cents). How many apples were sold?

Answer 1

let's consider that x apples were sold and y peches were sold...

Since total of 10 fruits were sold,
no. of apples + no. of peaches = 10.
let x apples were sold.
Guess how many peaches were sold then??
that is 10 - x.
price of x apples = x * 25
price of ( 10 - x ) peaches = (10 - x) * 15
.
now, 25x + (10 - x) . 15 = 210.
do the calculation. the answer comes out to be 6.