The gym teacher has $250 to spend on volleyball equipment. She buys 4 volleyball nets for $28 each. Volleyballs cost $7 each. How many volley balls can she buy

Answer:

she can buy maximum of 19 balls.

Step-by-step explanation:

Let the number of volleyballs be x

we know that

$\text{(The cost of each volleyball net} \times \text{number of volleyball net)}+\text{(the cost of each volleyball} \times \text{number of volleyballs)}\leq \ 250$

so substituting the values,

$28(4) + 7x \leq 250$

$112 + 7x \leq 250$

$7x \leq 250 - 112$

$7x \leq 138$

$x \leq \frac{138}{7}$

$x \leq 19.7$

3 0

2 years ago

A ball pit at a play area is filled with red and yellow balls. Of the total number of balls 60 percent are red. If there are 720

ser-zykov [4K]

To solve this we'll put the question in this format: x% of y things = z things

We have the percent so we'll put in 60 for x.
Now the total number of balls will be considered y since we have the number of red balls but not blue ones. so we end up having..

60% of y balls = 720 balls

Of is another word for multiplication, therefore:

60/100*y=720
Solve for y
y=1200

So we have 1200 balls

3 0

3 years ago