| A | B |
|---|
| What number is 20% of 75 ? | What number is 20% of 75 ? n=.2X75=15 OR n=1/5X75=15 *15* is 20% of 75. |
| What number is 33 1/3% of 63 ? | What number is 33 1/3% of 63 ? Convert 33 1/3% to a fraction: (33 1/3)/100X3/3=100/300=1/3 n=1/3X63=21 *21* is 33 1/3% of 63. |
| 40% of what number is 28 ? | 40% of what number is 28 ? .4Xn=28 n=28/.4 n=70 OR 2/5Xn=28 n=28X5/2 n=70 40% of *70* is 28. |
| 16 2/3% of what number is 8 ? | 16 2/3% of what number is 8 ? Convert 16 2/3% to a fraction: 16 2/3%=(16 2/3)/100X3/3= 50/300=1/6 1/6Xn=8 n=8X6/1=48 16 2/3% of *48* is 8. |
| 18 is what percent of 30? | 18 is what percent of 30 ? 18=pX30 p=18/30=3/5=60/100=60% OR 18=pX30 p=18/30=.60=60% 18 is *60%* of 30. |
| 14 is what percent of 21 ? | 14 is what percent of 21 ? 14=pX21 p=14/21=2/3=66 2/3% If you didn't already know that 2/3=66 2/3%, then do this: 2/3=.66 2/3=66 2/3%) 14 is *66 2/3%* of 21. |
| Michael made 80% of his free-throws. If he made 36 free-throws, how many free-throws did he attempt ? | Michael made 80% of his free-throws. If he made 36 free-throws, how many free-throws did he attempt ? Make this problem into a single statement, convert it to a math statement and solve algebraically: 36 is 80% of what number ? 36=4/5Xn n=36X5/4 n=45 Michael attempted *45* free-throws. |
| Mary correctly answered 83 1/3% of the math problems on the test. If there were 42 problems on the test, how many problems were correctly answered ? | Mary correctly answered 83 1/3% of the math problems on a test. If there were 42 problems on the test, how many did Mary correctly answer ? Express the problem as a single English sentence, translate it into a math sentence, and solve algegbraically: What number is 83 1/3% of 42 ? If you don't already know that 83 1/3% is 5/6, then do this: 83 1/3%=(83 1/3)/100X3/3 =250/300=5/6 n=5/6X42 n=35 Mary correctly answered *35* problems on the math test. |
| Ricky has 98 base hits in 350 official "at bats". What percent of the time has Ricky gotten a base hit ? | Ricky has 98 base hits in 350 official "at bats". What percent of the time has Ricky gotten a base hit ? Convert to a single English sentence: 98 is what percent of 350 ? Now, change this to an equation: 98=px350 p=98/350 p=.28 p=28% Ricky has gotten a base hit *28%* of the times that he has had an official "at bat". (As a baseball statistic, Ricky's batting average is .280 - in baseball slang, an announcer might say he is hitting 280.) |
| Lisa's meal cost $12.83. If she wants to leave a tip of 20%, rounded to the nearest quarter. how much money should she leave as her tip ? | The meal cost $12.83. Lisa wants to leave a 20% tip rounded to the nearest quarter. In other words, what amount is 20% of $12.83 ? a=.20x$12.83 a=$2.566 To the nearest quarter, Lisa wants to leave a tip of *$2.50*. A person should have no trouble doing this in his or her head. Think 2x$12.80 is $25.60 so .2x$12.80 is $2.56 which rounds, to the nearest quarter to *$2.50*. Or you could just round the bill up to $13 and think 2x$13 is $26 so .2x$13 is $2.60, which rounds to *$2.50*, to the nearest quarter. |
