Kris spent $131 on shirts. fancy shirts cost $28 and plain shirts cost $15. is kris bought a total of 7 then how many of each kind did she buy?

Number of fancy shirts Kris bought  = 2

Number of plain shirts Kris bought = 5

Step-by-step explanation:

Total number of shirts = 7

Let number of fancy shirts be =

Let number of plain shirts be =

Total number of shirts =

So, we have a sum equation as:

Total cost of shirts = $131

Cost of a fancy shirt = $28

Cost of  fancy shirts in dollars can be given as =

Cost of a plain shirt = $15

Cost of plain shirts in dollars can be given as =

Total cost of shirts =

So, we have a cost equation as:

The system of equations is :

A)

B)

Rearranging equation A, to solve for in terms of

Subtracting both sides by

Substituting value of we got from A into equation B.

Using distribution.

Simplifying.

Subtracting both sides by 105.

Dividing both sides by 13.

We can plugin in the rearranged equation A to get value of

∴

So, number of fancy shirts Kris bought  = 2

Number of plain shirts bough = 5

it is a secret for it not to be compromised sorry

step-by-step explanation:

sorry not knowing about that