Answer:
Step 1
a. 70 miles/ 1 hour | 1 hour / 60 minutes | 70/ 60 = 1.67
b. 1.67 x 10 = 16.7
Step 2
a. In the first eight minutes it would go 13.36.
r x t = d
1.67 miles per minute x 8 minutes = 13.36 miles
b. In the next eight minutes it would go 5.36 miles.
r x t = d
.67 miles per minute x 8 minutes = 5.36 miles
c. It traveled 8 miles farther.
13.36 - 5.36
d. It would be 1.75 times faster.
70 / 60 = 9. 3
40/ 60 = 5.33
5.33 x 1.75 = 9.3
e. It travels twice as much distances in half the time.
Step 3
a. to the river
D R T
10 miles |40mph |.25hours
10 miles |70mph| .14hours
from the river
b. 40 mph x .25 = 70 mph x .14
c. They both equal ten
a. 51.28
2 x 10 / (10 / 40) + (10/70) = 51.28
b. Yes because they both equal 51.28.
c. (They both have a common denominator and it’s written as one fraction.
)
(Multiplying 2d by the reciprocal of the denominator. Multiply across the fractions.)
(Factoring out d in the denominator and then cancelling out d.
)
d. 56 = 2 = 50.90
