Answer:
1.) C. 2 Pages
2.) B. 76 mph
3.) C. 35 cents
4.)?
5.)?
6.)B
7.) B
Explanation:
1. 2 1/2 = 5/2 1 1/4 = 5/4 5/4 * 4/5 = 1 so it is a unit with one
5/2 * 4/5 = 4/2 or 2 (You found unit by multiply what you did to the unit, because what you do to one side you do to the other)
2. 3 1/2 = 7/2 7/2 * 2/7 7/2 = 266 multiply for unit price, other wise you don't know what the true mph is, now multiply the 266 by 2/7 because what you do to one side you do to the other
2/7 = 266/1 multiply numerators and denominators
2 * 266 = 532
7 * 1 = 7 now put it back as a fraction
532/ 7 simplify
532/7 = 76
76 mph
3. 1.75 = 1 3/4 = 7/4 7/4 = 5 price = bagels now multiply the 5 by 1/5 (reciprocal) so that you can figure out what the unit is
5 * 1/5 = 1
7/4 * 1/5 multiply numerators together and denominators together
7 * 1 = 7
4 * 5 = 20
7/20 = .35
35 cents
4. 5. I am not sure
6. Solve each of them
A. 12 6/10 =126/10 126/10 = 7 multiply both for 1/7 for unit price
7 * 1/7 = 1 126/10 * 1/7 multiply 126 * 1 = 126 10 * 7 = 70
126/70 = 1.80
B. 10.98 = 1098/100 1098/100 = 6/1
1098/100 * 6/1 Multiply so that the unit is right
1098/600 = 1.83
1.83 = 1 juice
C. 18.10 = 18 1/10 = 181/10 181/10 = 10 price = number of juice
181/10 * 1/10 = 181/100 multiply with 1/10 so that 10 is 1 (unit price)
$1.81 = 1 juice
D. 16 38/100 = 1638/100 1638100 = 9 multiply both sides by 1/9 so unit is 1
9 * 1/9 = 1
1638/ 100 * 1/9 1638/900 = 1.82
$1.82 = 1 juice
1.80 per juice is cheapest so it is B
7.
B. 1 = $5 it is the unit so if you multiply by all the numbers on top it will equal the number in the row, none of the others do that