Ratios and Proportions
CVS sells 25 notebooks for $75.00 dollars.
Rite-Aid sells 30 notebooks for $88.50.
Which store has the better price for notebooks?
Rite-Aid has the better deal.
CVS - $3.00 per notebook
Rite-Aid - $2.95
3/5 x 3/8 = ?
9/40
263.85 + 1475.617 = ?
1739.467
-45 x -16 = ?
720
Solve for x.
7x = 56
x = 8
What two things must be true about the graph of a proportional relationship?
1. Straight Line
2. Passes through the origin (0,0)
4 17/35 + 19/35 = ?
All answers must be in simplest form. No improper fractions!
5 1/35
567 - 342.44 = ?
224.56
333 / (-9) = ?
-37
Solve for x.
3x + 24 = 48
x = 8
How do you know an equation represents a proportional relationship?
One step equation.
Ex: y = 3x
15/16 + 1/3 = ?
All answers must be in simplest form. No improper fractions!
1 13/48
571.8 x 44.3 = ?
25330.74
(-313) + (-87) = ?
-400
Solve for x.
6x - 17 = 43
x = 10
Mary and Bob are selling cookies for school.
Mary sells cookies for $123 per 15 boxes.
The equation y = 8.65x represents Bob's cost per box of cookies.
Who sells cookies for the cheaper price?
Mary = $8.20
10 2/5 - 4 2/3 = ?
All answers must be in simplest form. No improper fractions!
5 11/15
2282.8 / 13 = ?
175.6
-78 + 146 = ?
68
(1/3)x = 72
216
A candy bowl is filled with green jolly ranchers and blue jolly ranchers. The ratio of green jolly ranchers to blue jolly ranchers is 5:7. If there are 48 total jolly ranchers, how many green jolly ranchers are in the bowl?
20
3 7/8 divided by 2 1/6 = ?
All answers must be in simplest form. No improper fractions!
1 41/52
0.18849 / 0.03 = ?
6.283
(-365) - (-422) = ?
57
5x + 27 = 2x + 78
17