one Brian's item cost: x
one Chris' item cost: x+2.5
Set up equation:
Brians amount = Chris amount
4*x = 3*(x+2.5)
solve for x:
4x = 3x + 7.5
x = 7.5
Brian's items cost $7.5 each.
Check:
Brian paid 4*7.5 = $30
Chris paid 3*10 = $30
The individual cost of Brian's items was $7.50, and the indiv. cost of Chris' items was $10.
Answer:
<em><u>C=139.80</u></em>
Step-by-step explanation:
C=2πr
=2π(22.25)
=139.80
<em>C=</em><em>1</em><em>3</em><em>9</em><em>.</em><em>8</em><em>0</em>
Answer:
P = 180 cm.
Step-by-step explanation:
Perimeter = 2 Lengths + 2 Widths
P = 2l + 2w
P = (2 * 40) + (2 * 50)
P = 80 + 100
P = 180 cm.