A middle school band is selling candy bars and nuts to raise money for a field trip. Each candy bar, b, costs $1.50 and each box of nuts, n, costs $4.00. If they raised $418, what expression shows the portion that came from candy bar sales?

1.5b = 418 - 4n (all in dollars)

Step-by-step explanation:

Let b represent the number of candy bars sold and n the number of box of nuts sold.

Given that each;

Candy bar costs $1.50

box of nut $4.00

Amount raised from candy bars = $1.50 × b

Amount raised from box of nut = $4.00 × n

Total amount raised = $418

The equation for the total amount raised is;

1.50 × b + 4.00 × n = 418

1.5b + 4n = 418

The portion that came from candy bars is;

Making 1.5b the subject of formula;

1.5b = 418 - 4n

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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