ratio

forms of ratio

examples

1. 2 : 6

solution

2 : 6

reduce the quantities to the lowest term by a digit acceptable to both. 2 is acceptable.

2 : 6

= 6 / 2

= 1 : 3

2. 4minutes : 20minutes

solution

4min : 20min

= 2 : 10

= 1 : 5

ratio or fraction has no unit. Always change the quantities to the same unit and cancel out

3. 2hours : 40minutes

solution

2hours : 40minutes

1hr = 60minutes

2hr = ( 2 * 60 )minutes

= 120minutes

2hr = 40min

120min : 40min

120 : 40

60 : 20

30 : 10

15 : 5

3 : 1

4. Decrease $100.00 in the ratio of 2 : 5

solution

2 * 100

5 1

= 200

5.

= $40

5. Increase $100 in the ratio of 2 : 5

solution

5 * 100

2 1

= 500

2

= $250

6. Wendy and Roseline shares 200

buttons in the ratio of 2 : 3. How many

buttons does each get?

solution

Wendy ratio = 2

Roseline ratio = 3

Total ratio = 5

the total ratio = 5

the buttons shared = 200

5 = 200 buttons

5

Wendy = 2 = 2 * 200

5 5 1

= 400

5

= 80 buttons

Roseline = 3 = 3 * 200

5 5 1

= 600

5

= 120 buttons