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Published byHalle Lattimore Modified over 3 years ago

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**Be able to divide a quantity into a given ratio**

Objective Be able to divide a quantity into a given ratio

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**Ratio: What does this mean?**

Ratio is used to compare the sizes of two (or more) quantities. For example: a drink is made by mixing two parts orange juice with five parts water. This relationship of 2 to 5 can be written as the ratio 2:5. So the ratio of iron to copper is 60:40. We could simplify this to give 3:2 A steel alloy rod is made up of 60% iron and 40% copper.

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**Dividing a quantity in to a ratio**

Divide 560kg in the ratio 3:4 Total parts 1 part parts 3 + 4 = 7 560 7 = 80 3 3 x 80 = 240kg 4 4 x 80 = 320kg Divide 560kg in the ratio 3:4 is 240kg:320kg

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**Time to try some! £900 into the ratio 4:5 £400 : £500**

2205kg into the ratio 8:13 450 hours into the ratio 5:6:7 550 lbs into the ratio 5:8:9 £400 : £500 £75 : £125 £245 : £385 840kg : 1365kg 125h : 150h : 175h 125lbs : 200lbs : 225lbs

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