Answers
9) $2.00 ÷ 5 oranges = .40 per orange
.40 x 24 oranges = $9.60 cost of 24 oranges
An equation would be
2.00 /5 = x/24
Cross multiply
5x = 48
X = 9.60
10) $180 ÷ 3 days rent = $60 per day rent
$60 x 7 days (1 week) = $420 rent for 1 week
An equation would be
$180/3 = x/ 7
Cross multiply
3x = 1260
X = $420
11) 32 km ÷ 2L gas = 16 km per L gas
78 km ÷ 16 km = 4.875 L gas to drive 78 km
An equation would be
32 / 2 = 78 / x
Cross multiply
32x = 156
X = 4.875
Step by step
Proportions are the same as rate. Rate is found using division to find the amount per unit. Proportional equations will equal each other. I showed you common sense math and also an equation to find the answers.