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Quarter 3 Test 3

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  1. Quarter 3 Test 3 XLIV. Ratios and Rates XLV. Proportions Probability XLVII. Percents, Fractions & Decimals Finding the Percent of a Number Sales Tax, Discounts & Tipping L. Similar Figures

  2. Oscar gets 2 hits out of his every 5 times he comes up to bat. How many hits would you expect him to have in 60 at bats? 2x = 560 2(60)=5(x) 120=5x 5 5 x = 24 hits

  3. Jason averages 4 earned runs for every 9 innings he pitches. How many earned runs would he have if he pitched 45 innings? 4=x 9 45 4(45)=9(x) 180=9x 9 9 x = 20 earned runs

  4. In 1 hour Arthur hikes 3 miles. At the same rate, how long will it take him to hike 12 miles? 1 =x 3 12 1(12)=3(x) 12=3x 3 3 x = 4 hours

  5. The rectangles are similar. What is the length of n? 6cm 4cm 6cm n 6(6)=4(n) 36=4n 4 4 n = 9 4=6 6 n

  6. RST is similar to XYZ. What is the length of XY? S Y x 14m 10m 4m Z X 4m T R 10m 10(x)=14(4) 10x= 56 10 10 x = 5.6m 10=4 14 x

  7. Find the length of h. h 6cm 18cm 72cm h=6 72 18 18(h)=6(72) 18h=432 18 18 h = 24cm

  8. Find the discount and the sale price. List Price: $24 Rate of discount 10% Discount=________ Sale Price=_________ $24 x.10 $2.40 $24 - 2.40 = $21.60 original price discount sale price

  9. In a high school survey, it was found that 240 of 600 students walk to school. What percent of the students walk to school? 240= 2 600 5 2=p 5 100 240 = .40=40% 600 OR 2(100)=5p 200 = 5p 5 5 p = 40%

  10. There are 650 muscles in the human body. It takes 17 muscles to smile. To the nearest percent, what percent of all your muscles are needed to smile? 17= .026 (100) = 2.6% 3% 650 fraction decimal percent rounded to nearest percent

  11. Between 1924 and 1998, the United States won a total of 161 medals in the Winter Olympic Games. If the United States won 59 silver and 42 bronze medals rounded to the nearest percent, what percent of its medals were gold medals? 59+42=101 (silver + bronze) 160-101= 59 (total – silver + bronze = gold) 59=.368 160 decimal fraction .368(100) = 36.8% 37%

  12. In a School election, 48% of the 200 voters voted Tara. How many people did not vote for Tara? 200(.48) = 96 people voted Tara therefore 200 – 96 = 104 did not vote for Tara

  13. A Pair of sneakers, regularly priced at $84, is on sale for 20% off. Find the sale price. 84(.20)=16.80 84-16.80=$67.20

  14. Which is the Better Buy?Give the rate and the unit rate. 3 apples for $.75 or 9 apples for $2.10 $.75 =$.25 3 1 $2.10 = $.23 9 1 The 9 apples for $2.10 is a better buy.

  15. If the dinner bill was $82.12 and you wanted to leave a 20% tip for the waiter, what would the cost of the dinner and the tip be? $82.12 + $16 = $98.12

  16. If 2 ½ inches on a map represents 750 miles, how many miles is represented by 4 inches? 2.5 = 4 750 x x = 1200 miles

  17. Compare Use <, > or =. 1) > 2) < 3) > 4) = 5) = 1) 75%_____ 3/5 2) 324%_____31/4 3) 27%_____ .027 4) .375_______ 6/16 5) .4000______40%