A househould uses approximately 37.9726 m3 of water in a particular month. If the national average of water usage per month for a typical 5-rom HDB flat in Singapore is 19.1m3, how many percent above average is the water usage for this household?
Here's my working
37.9726 - 19.1 = 18.8726 m3
%tage above average = (18.8726/19.1) X 100
=98.809 %
= 98.8%
49.7% is the answer given. but i still think my method is correct. I mean, if it's 100% increase above average, the amount of water used would be about 38.2 m3, which is somewhere near 37.9726m3
By the way, on calculating service charge and GST, SC is calculated based on ONLY your food/item bill while GST includes the bill of both SC and item right?
Hi,
Looks correct.
Yes, it sounds reasonable.
Thanks!
Cheers,
Wen Shih