To work out 8% of 150, you have to do 150 multiplied by 8, divided by 100.
So it should look like this: (150 × 8) ÷ 100. (Which is 12%)
You have to remember to divide by 100 at the end, because a percentage (%) is out of 100, so you have to make the number out of 100, and the only way to do that is to divide by 100.
<h3>Given</h3>
regular paper costs $3.79 per ream
recycled paper costs $5.49 per ream
$582.44 was spent for 116 reams
<h3>Find</h3>
the numbers of reams of each type that were purchased
<h3>Solution</h3>
Let r and g represent the numbers of reams of regular and recycled ("green") paper, respectively.
... r + g = 116 . . . . . . . . 116 reams were purchased
... 3.79r + 5.49g = 582.44 . . . . this is the total cost of the purchase
Solve the first equation for r and substitute that into the second equation.
... r = 116 - g
... 3.79(116 - g) + 5.49g = 582.44 . . . . . use the expression for r
... 1.70g + 439.64 = 582.44 . . . . . . . . . simplify
... g = (582.44 -439.64)/1.70 = 84 . . . . subtract the constant, divide by 1.70
... r = 116 -84 = 32 . . . . . . . . . . . . . . . . . use the equation for r
32 regular reams and 84 recycled reams were purchased
Answer:
On x it is 9, on y it is 37,49
Step-by-step explanation:
You start by looking at what number can divide evenly into both 16 and 48. Both numbers are divisible by 16. 16 goes into 16 once and 16 goes into 48 three times. So you divide each term by 16 and your expression should look like this: 16 (p+3)
Answer:
9 cm
Step-by-step explanation:
Circumference of a circle is given by
C = pi * 2 *r
18 pi = pi * 2 *r
Divide each side by pi
18 = 2 r
Divide each side by 2
18/2 = 2r/2
9 = r
The radius is 9 cm