
pls help
:confused: :confused: 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?

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?
