Ratios

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Introduction to Ratios
What are equivalent ratios?
Ratios, Rates, and Proportions
- What are they?
- How are they different from each other?

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Write the following ratios using ratio notation in lowest terms.
1. 5 km in 30 minutes.
2. 4 cases for $500.
3. 5 cupcakes need 325 g of flour.
4. 130 mm of precipitation in 2 days.
Write the following ratios in fraction form in lowest terms.
1. 3 hours in 1 week.
2. 35 g sugar in a 335 ml can of pop.
3. 4 servers to serve 6 tables with 4 guests each.
4. 22 sheep and 30 cows. What is the ratio of sheep to the total number of animals?

The following table shows the sugar and flour needed for different kinds of bakery.

Which 2 kinds of bakery have the same sugar-flour ratio? Show your work.
What is the ratio of sugar needed for cookie to the total weight of sugar needed for all 3 kinds of bakery?

Ratios With Decimals
Simplify the following ratios.
1. 1.2 : 4
2. 1.4 : 1.6
Ratios With Fractions
Simplify the following ratios.
1. $\frac{2}{5} : 4$
2. $\frac{2}{3} : \frac{7}{8}$
Ratios in Different Units
Simplify the following ratios.
1. 5 cm : 30 km
2. 4 hr 15 min : 3hr 30 min
Application of Ratios
Jack and Jill are to share the candies in the ratio 3:4. If there are 21 candies in total, how many candies does each of them get?
Harry and Sally got some pocket money from their mother and they were to split it in the ratio 3:5. If Sally got $30, how much money in total did their mother give them?