Question

A postal clerk sold 50 postage stamps for $16.05. Some were 39-cent stamps and the rest were 24-cent stamps. How many 39-cent stamps were sold?
Is the answer 19?

[1] 19
[2] 23
[3] 27
[4] 31

Answer 1

x= number of 39 cent stamps
50-x = number of 24 cent stamps
.39x+.24(50-x)=16.05
Can you solve that equation?

Answer 2

OH, I see my mistake. I didn't make it a decimal, I put it as a whole number

Answer 3

You could do that if you would also use cents on the right side. That is instead of 16.05 put 1605. Then you wouldn't need any decimals at all.

Answer 4

Ah I see. Well thank you xD. Since you're here, I'd like to ask...
Instead of x equaling 39 cent stamps, can it equal 24 cent stamps instead?

Answer 5

Of course. It makes no difference at all. Just remember to answer the question the problem asks.

Answer 6

Well I would like to thank you, so very much! xD

Answer 7

yw