ratios and propotion

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, expressed as 'a:b' or 'a/b'.

Front

What does it mean for numbers to be in continued proportion?

Back

Three numbers a, b, and c are in continued proportion if a/b = b/c.

Front

Are the numbers 3, 5, 7 in continued proportion?

Back

No, because 3/5 is not equal to 5/7.

Front

Are the numbers 3, 9, 12 in continued proportion?

Back

Yes, because 3/9 = 1/3 and 9/12 = 3/4, which are equal.

Front

What is the simplest form of the ratio 5L to 250mL?

Back

20:1.

Front

How do you determine if two ratios are equivalent?

Back

Two ratios a:b and c:d are equivalent if a/b = c/d.

Front

Is the ratio 3:4 equivalent to 15:20?

Back

True, because 3/4 = 15/20.

Front

If Daniel bought 2 pairs of jeans for $50 and Howard bought 4 pairs for $90, did they pay the same rate?

Back

No, they did not pay the same rate.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How can you simplify the ratio 5000:250?

Back

By dividing both sides by 250, you get 20:1.