Answer:
3 girls for every 4 boys
Step-by-step explanation:
Number of girls = 12
Number of boys = 28 - 12 = 16
The ratio of girls / boys = 12/16 = 3/4
Answer:
Step-by-step explanation:
let : x the length and y the width .... ( x > y and x ; y reals numbers )
the perimeter is : 2(x+y)
2(x+y) = 55...(1)
x/y = 7/4 ...(2)
by (2) : x = (7/4)y
subsct in (1) : 2( (7/4)y +y ) =55
(7/2)y +2y =55
multiply by 2
7y +4y = 110
11y = 110
y = 10
x = (7/4)(10)
x = 35/2
Answer: Average per year for the repairs and maintenance is $273.66
Step-by-step explanation:
She replace the brake pads in the third year for $98 and the preventive maintenance plan cost $723
what did he average per year for repairs and maintenance?
The total cost of repairs and maintenance = 98 + 723 = 821
repairs and maintenance over the first three years
Divide the answer by 3
821/ 3 = 273.67 dollars per year
