Thread: Percentage

Please help. The question reads...The refrigerator was repaired for $176. If GST is 10%, how much was GST? Is the answer $17.60 or $16. Can some one please tell me which answer is right and why the other answer is wrong. GST is a Tax added on to the purchase price. If $17.60 is right wouldnt the repair then cost $193.60?

Originally Posted by not happy jan

Please help. The question reads...The refrigerator was repaired for $176. If GST is 10%, how much was GST? Is the answer $17.60 or $16. Can some one please tell me which answer is right and why the other answer is wrong

I don't know what GST is but I assume they are asking to find % of $ .

A percentage is always out of 100 hence you can multiply through in that format:



When asked to calculate percentage, you can also change it to decimal and multiply through.




The answer is $ .

Originally Posted by not happy jan

Please help. The question reads...The refrigerator was repaired for $176. If GST is 10%, how much was GST? Is the answer $17.60 or $16. Can some one please tell me which answer is right and why the other answer is wrong. GST is a Tax added on to the purchase price. If $17.60 is right wouldnt the repair then cost $193.60?

Ok, so you have edited the question. It is asking for the value before tax of 10% is added.

$176 is the total after tax is added hence as a percentage value it is 110% which is 1.1 as a decimal number. To get the value before tax, we need to find the 100% value hence we cross multiply.



Therefore the value before tax is added is $160.