All Junior Cert Mathematics posts
• #### Anyone good at maths.... shadan

can someone explain ratio to me because according to a question im doing, i dont get it.....

if u had 16:9 width:height does that mean that technically 16 units of the width is equal to 9 units of the height......

according to this question they are equal in some way but i dont get it.....

1. #### themathstutor.ie

Ratios are a way of comparing one amount with another. For example measurements:

width:height

16 : 9

It means that for every 16 units of width, you have 9 units of height.

For example, a TV could be designed to have this ratio.

If the TV was 16 inches high, then the width would be 9 inches.

If the TV was 32 inches high, then the width would be 18 inches.

And if the TV was 8 inches high, then the width would be 4.5 inches.

And to answer your question, it means that 1/16th of the width is equal to 1/9th of the height.

Regards,

Eamonn - themathstutor.ie

2. #### leond429

I do not know the answer

3. #### Dazzla16

Hi shadan! What exactly is the question you are stuck in? Does it involve problem-solving or is it a regular question about ratios? Please state the question word for word.

4. #### Dazzla16

Hi shadan! Does this question happen to involve a ''40 inch'' TV with the aspect ratio being 16:9?