Simplifying Ratio - created from Mind Map

Seite 1

12:21:33

Example

Example

21:49:84

Working out ratio in the calculator

If the ratio contains a decimal or fraction

"Mortar is made from mixing sand and cement in the ratio 7:2 / how many of buckets will be made if 21 buckets of sand are used."

Jess, Mo and Greg share £9100 in the ratio 2:4:7. How much does mo get?

divide by 3

4:7:11

divide by 7

3:7:12

Example

For the ratio 8:12, enter it into the fraction option, so will get 8/12, press equals and you should get the answer of 2/3, change it back tot the ratio 2:3

Example

"Simplify the ratio 2.4:3.6"

Multiply both ratios by 10 to get rid of the decimal

(x10) 2.4:3.6 (x10) 24:36 then divide too put the ratio into the simplest form

(x3)7:2(x3) 21:6

You need to multiply by 3 to go from 7 to 21

21 buckets of sand : 6 buckets of cement

Amount of mortar made = 21 + 6 = 27 buckets

Step 1 = add up the ratio (2:4:7 = 13)

2 + 4 + 7 = 13 parts £9100 divide by 13 = £700 (1 Part) 4 parts = 4 x £700 = £2800

Step 2 = Divide to find one (divide the total amount by the number of parts)

Step 3 = Multiply to find the amounts ( Mo's share is 4 parts)