# Math Help - pls help

1. ## pls help

this may seem an easy quetsion but i really need your help

here's the question:

John bought a certain number of apples at 30 cents each and he had $3 left. If he bought the same number of pears at 40 cents each instead of the apples, he would be short of$ 1. How many apples did he buy?

2. Let the number of apples be represented by x
Let the amount he has be represented by y

Apples are 30 cents so he has spent .3x dollars on apples (I'm assuming 100 cents in a dollar, I'm not American)

He has 3 dollars left over so

y = 0.3x + 3

Pears are 40 cents so he has spent .4x dollars on pears

He need 1 more dollar

y + 1 = .4x or y = 0.4x - 1

So have simultaneous equations

y = 0.3x + 3
y = 0.4x - 1

Can you solve it now?

3. thks