The number of inches of snow in 1 hour = 1.625
The cost of 1 book = $11
Explanation:
a) Let the number of inches in 1 hour = x
13 inches = 8hours
x = 1 hour
cross multiply:
13 inches ( 1 hour) = x(8 hours)
13 = 8x
Divide both sides by 8:
13/8 = 8x/8
1.625 = x
The number of inches of snow in 1 hour = 1.625
b)let the cost for 1 book = x
9 books = $99
1 book = x
cross multiply:
x(9 books) = $99(1 book)
Divide both sides by 9:
9x = 99
9x/9 = 99/9
x = 11
The cost of 1 book = $11
