Joshua and his children went into a bakery and he bought $15 worth of donuts and cookies. each donut costs $1.75 and each cookie costs $1. he bought a total of 12 donuts and cookies altogether . determine the number of donuts and the number of cookies that joshua bought .

The number of donuts bought is 4 while the number of cookies bought is 8

Step-by-step explanation:

Joshua bought donuts and cookies. The cost of each donuts is $1.75 and the cost of each cookies is $1. He bought a total number 12 donuts and cookies altogether. But the number of donuts bought and the number of cookies bought is not given.

Let the number of donuts bought = a

Let the number of cookies bought = b

The total cost of the donuts and cookies bought = $15

The total number of donuts and cookies bought = 12

Therefore,

1.75a + 1b = 15(i)

a + b = 12(ii)

b = 12 - a

Inserting the value of b in equation (i)

1.75a + 12 - a = 15

1.75a - a = 15 - 12

0.75a = 3

a = 3/0.75

a = 4

Inserting a in equation(ii)

4 + b = 12

b = 12 - 4

b = 8

the answer is "add 2y and y"

step-by-step explanation:

you need to collect the like terms first.