Convert them into fractions
i)-2 3/8 = -19/8
ii)0.75 = 75/100 = 3/4
iv) 1 3/4 = 7/4
Now convert all of them in the form of p/q where q = 8
Therefore
ii)6/8
iv) 14/8
Convert 30% to a decimal by dividing by 100 = 0.30
Multiply by the cost of the helmet, $50
50 x 0.30 = $15, the amount of the discount.
50-15 = $35, the sale price of the helmet.
For the sales tax, again, convert to a decimal by dividing by 100 = 0.06
35 x 0.06 = 2.10, the amount of sales tax
$35 + $2.10 = $37.10, total cost with tax
12.50 x 40 = 500; this is his first week pay from $12.50 an hour for 40 hours
(15 x 55) + 100 = 925; this is the second pay from $15 an hour for 55 hours and an additional $100
Hope this helps! (If not correct me if its wrong xd)
18 is 60 percent of 30. 3 percent is 10 percent of 30 so 3 x 6 equals 18.
