Question

http://prntscr.com/5f9odl

@iGreen @satellite73 @Directrix @ganeshie8 @iambatman @texaschic101 @Compassionate

Answer 1

I'm stuck on this one. @SolomonZelman

Answer 2

So,
let the number of pineapples = P
and
let the number of mangos=M

So, the equation for the number of pineapples would be,
`P+M=15`
and the equation for the cost would be
`2.5 P + 1.5 M = 29.50 `

makes sense?

Answer 3

29.5, not 29.50. Same thing, but I want to get it right technically as well as conceptually.

Answer 4

Yes.

Answer 5

So, can you solve the system?
(I would do substitution, with a first equation)

Answer 6

You have trouble solving the system?

Answer 7

Yep, I'm having trouble with this one.

Answer 8

okay, I'll set you up.
\(\large\color{black}{ P+M=15 }\)
\(\large\color{black}{ 2.5 P + 1.5 M = 29.50}\)

\(\large\color{black}{ P+M\color{red}{-M}=15\color{red}{-M} }\)
\(\large\color{black}{ P=15-M }\)
\(\large\color{blue}{ P=15-M }\)

\(\large\color{black}{ 2.5 (\color{blue}{15-M}) + 1.5 M = 29.50}\)

Answer 9

Can you finish?

Answer 10

Are you asking to solve for m?

Answer 11

We can write a system of equations..

2.5x + 1.5y = 29.5
x + y = 15

Answer 12

Yes, he is. @iKayla

Answer 13

m = 8

Answer 14

Right, so he bought 8 mangos.

Subtract that from 15, and you will get the # of pineapples he bought.

Answer 15

8 Mangos and 5 Pineapples ?

Answer 16

7 Pineapples *

Answer 17

@iGreen

Answer 18

yes, 7 Pineapples.

Answer 19

\(\sf 15~total~fruits - 8~mangos = 7~pineapples~\Large \color{lime} \checkmark\)