Question

If Samantha wants two bags of chips and a coke,how much should she plan to spend?

Answer 1

C. 7$

Explanation:

Answer 2

Samantha should plan to spend $7.

Explanation:

Let the price of 1 pizza be = p

Let the price of 1 coke = c

Let the price of 1 pack of chips = b

As per table, we get following equations:

`p+c+b=9` or
`p=9-c-b` ......(1)

`p+2c=10` .......(2)

`2p+2b=12` ......(3)

Substituting the value of p from (1) in (2)

`9-c-b+2c=10`

=>
`c-b=1` ......(4)

Substituting the value of p from (1) in (3)

`2(9-c-b)+2b=12`

=>
`18-2c-2b+2b=12`

=>
`18-2c=12`

=>
`2c=18-12`

=>
`2c=6`

c = 3

We have
`c-b=1`

=>
`b=c-1`

=>
`b=3-1`

b = 2

And
`p=9-c-b`

`p=9-3-2`

p = 4

We get the following cost now.

Cost of 1 pizza = $4

Cost of 1 coke = $3

Cost of 1 chips bag = $2

We have been given that Samantha wants two bags of chips and a coke.

So, she should spend
`(2*2)+3`=
`4+3=7`

Hence, Samantha should plan to spend $7.