Answer:
1.) $2.36
2.) $36
3.) a) $31.60
3.) b) $426.60
Step-by-step explanation:
1.) To begin we need to convert 15% to a decimal. To do this we can move the decimal point 2 spaces to the left. This gives us 15% -> 0.15
Then we multiply this number (0.15) by the total mean cost.
15.75 · 0.15 = 2.36
This means that a 15% tip on a $15.75 meal would add $2.36 to the total cost.
2.) To begin we need to find what 50% of 80 is. This is simple because 50% is half of the original price. We can also move the decimal place over 2 numbers to the left to get 0.50 and multiply this by the original price.
80 · 0.50 = 40 OR... 80 ÷ 2 = 40
Now the problems says that Lyla has an extra 10% off from that discounted price that we just figured out (40). We move the decimal place 2 numbers to the left again and multiply by 40.
40 · 0.10 = 4
Finally we subtract our 10% discount (which is $4) from our new original price ($40).
40-4 = 36
3.) a.) 350 + 45 = $395 ( this is the price of both items before tax).
To find the extra cost of the 8% tax we move the decimal over to the left 2 places. 8% -> 0.08
We can then multiply of cost and tax.
395 · 0.08 = 31.60 (this means that there is a $31.60 tax on this purchase).
3.) b.) For the total price we add the tax we just found and the original cost of the 2 items.
$31.60 + $395 = $426.60
