An egg tart costs $1.30 . A customer is entitled to buy one egg tart for $1.00
after buying 2 egg tarts. Find the maximum number of egg tarts that can be bought
for $17.00.
He can buy a group of 3 egg tarts for $1.30 + $1.30 + $1.00 = $3.60
$17.00/$3.60 = 4.7222... That's 4 and a fraction. Take the whole part 4.
So he can buy 4 groups of 3 egg tarts for 4($3.60) = $14.40, that's 12 egg tarts.
Then he will have $17.00 - $14.40 = $2.60 left to spend, which is exactly enough
for 2 more egg tarts, at the regular price of $1.30 each.
So that makes 14 egg tarts for $17.00. [Assuming egg tarts are tax free!].
Edwin