Ratios And Rates Worksheet - Chapter 3 Page 24
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38B
Practising
Determine the missing term.
3.
■
a)
Three trucks have 54 wheels. Six trucks have
wheels.
■
In 5 h, you drive 400 km. In 2 h, you drive
km.
b)
In 2 h, you earn $20. In 9 h, you earn ■.
c)
■
Six boxes contain 72 doughnuts.
boxes contain
d)
48 doughnuts.
Brad pays $56 for four CDs.
4.
At this rate, how many CDs can he buy with $42?
a)
b)
Why might you use a different strategy to figure out how
many CDs he could buy with $28?
2
5.
Calculate the unit cost (the cost for 1 kg, 1 L, or 1 m
).
$3.70 for 2 kg of peaches
a)
$2.99 for 1.89 L of juice
b)
2
c)
$283.28 for 22.5 m
of floor tiles
Wayne Gretzky scored 2857 points in 1487 NHL hockey games.
6.
a)
Calculate his average points per game to the nearest
hundredth.
b)
At this rate, how many more points would he have scored
in 79 more games?
7.
Suppose 6 kg of oranges cost $14. How many kilograms of
oranges can you buy for $21?
8.
A grey whale’s heart beats 24 times in 3 min. How many times
does it beat in a day?
When might you use the concept of rate in a grocery store?
9.
Jason’s mom drove 160 km to a stampede at 100 km/h. Then
10.
she drove back home at 90 km/h. What was the difference in
time between the trips?
Create a problem that involves calculating speed, in which you
11.
know the distance travelled and the time taken to travel that
distance. Solve the problem in two ways.
125
Ratios and Rates
NEL
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