Question

Can someone solve this problem:
A wireless phone company charges a monthly fee of $8.95 and a cost per minute of use. One customer was charged $20.35 for 95 minutes. How much will another customer pay for 243 minutes?

Is the answer $38.11?

Answer 1

how much is per min

Answer 2

yes the answer is 38.11

Answer 3

it's pretty simple really, just subtract the monthly fee from the 20.35

Answer 4

then divide that by 95 mins to get $0.12 per min

Answer 5

$20.35=95x + $8.95
- 8.95 - 8.95
11.40 = 95x
(divide both sides by 95)
.12 = x
THEN
Y= 243(.12) + 8.95
Y= 29.16 + 8.95
Y= 38.11

Answer 6

^^^^ Is that correct?

Answer 7

so the cust who used 243 mins spent $29.16 plus the monthly fee

Answer 8

yea, I think that way works too. it was just faster for me to work it in my head the way I did it.

Answer 9

Yeah. Thanks for the clarification..

Can I ask you something else?

Answer 10

you can ask, not sure if I'll have an answer :-)

Answer 11

How would you explain my work in words..?

Answer 12

algebraaaaaaaa

Answer 13

uhmm.... well you said the billed amount is equal to the number of mins plus the monthly fee

Answer 14

subtracted the monthly fee from both sides to eliminate it from the equation

Answer 15

and divided the amount charged/min by the number of mins to get the cost/min of 12 cents

Answer 16

and then you said, total mins times 12 cents plus the monthly fee of 8.95 and voila

Answer 17

Thanks.

Answer 18

no problem!