Answer:
Question 14:
13 x 100 = 1,300
1,300 ÷ 22 = 59.09
Answer: 59.09%
Question 15:
4 quarters = 1 year
1/4 = 25% of a year
25 x 4 = 100
4/4 = 100% of a year
25 x 7 = 175
7/4 = 175% of a year
Answer: 175%
Question 16:
Roger's statement could be correct because the amount of students in a school is usually much greater than the amount of teachers and employees. As you see in the question 27% of the high school students drive to school and 94% of the staff drives to school, so by using critical thinking skills you can see that since there are usually hundreds more students in a school than teachers that the 27% percent could still be a huge amount of students even if it is less than half of the students.
Question 17:
100% of the 120% is the original price so, Stefan is making 20% more than he originally spent.
20% x 114 = 22.8
114 - 22.8 =91.2
20% x 18 = 3.6
18 - 3.6 = 14.4
Answer: The original price for the bicycle was $91.20 and the original price for the helmet was $14.40.
Question 18:
140% x 30 = 42
A proportional equation is written as y = kx.
Answer: 42 = 140% x 30
Question 19:
PART A:
180% x 50 = 90
7.65 ÷ 90 = 0.085
Take the number 0.085 and move two places back.
8.5
Answer: The sales tax rate is 8.5%.
PART B:
180% x 35 = 63
63 x 2 = 126
63 x 3 = 189
63 x 4 = 252
Answer: In order for the total paddle sales to be at least $250 he would have to sell 4 paddles. I got this answer by multiplying 63 by 4 which gave me the outcome of 252.
