Peg and larry purchased "no contract" cell phones. peg's phone cost $25 plus $0.25 per minute. larry's phone cost $35 plus $0.20 per minute. after haw many minutes of use will peg's phone cost more then larry's phone?

Solution:

Peg's phone cost $25 plus $0.25 per minute.

Larry's phone cost $35 plus $0.20 per minute.

Let Peg's phone cost more then Larry's phone after t minutes.

Then we can write

Hence Let Peg's phone cost more then Larry's phone after 200 minutes.

you never say the total so we cant find the percentage used for petrol

step-by-step explanation:

answer:

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

explanation:

service only with 20% tip  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the  

service

−−−−−−  

so technically the answer is  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

however, the intention of the question provider may have been that your answer is to be  

$

87.12

(

1

+

8

100

)

=

$

94.09

to 2 decimal places.

'

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge  

.

→

$

72.60

20% tip  

20

100

×

$

72.60

=

$

14.52

−−−−−−  

←

add

$

87.12

tax  

8

100

×

$

87.12

=

$

6.97

−−−−−  

←

add

$

94.09

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