# Finding the total amount given the percentage of a partial amount Online Quiz

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Q 1 - In a parking lot there were red and blue cars. There were 30 red cars, the percentage of blue cars was 25%. How many cars were there altogether?

### Explanation

Step 1:

Percentage of blue cars = 25%;

Percentage of red cars = 100% − 25% = 75%

Step 2:

Number of red cars = 30

Total number of cars = $\frac{30}{75} \times 100 = 40$

Q 2 - Frank had some money. He spent $21 dollars on new books, which is 30% of the money he had. What was the amount of money he had? ### Answer : C ### Explanation Step 1: Amount spent on books =$21;

Percentage of money spent of books = 30%

Step 2:

The total amount = $\frac{21}{30} \times 100 = \$70$Q 3 - A parking lot has 32 empty spaces. If the percentage of taken spaces is 80, how many spaces are there in total? ### Answer : D ### Explanation Step 1: Percentage of taken spaces = 80% Percentage of empty spaces = 100% − 80% = 20% Step 2: Number of empty spaces = 32 Number of total parking spaces =$\frac{32}{20} \times 100 = 160$Q 4 - A cafeteria sold two types of milk, regular and chocolate. If they sold 23 cartons of regular flavor, and the percentage of chocolate flavor milk cartons sold was 75%, what is the total number of milk cartons that were sold? ### Answer : A ### Explanation Step 1: Percentage of chocolate flavor cartons = 75% Percentage of regular flavor cartons = 100% – 75% = 25%; Step 2: Number of regular flavor cartons sold = 23 Number of total cartons sold =$\frac{23}{25} \times 100 = 92$Q 5 - At a restaurant, the number of kid’s meals sold was 17 and the percentage of adult meals sold was 80%. What is the total number of meals sold? ### Answer : A ### Explanation Step 1: Percentage of adult meals sold = 80% Percentage of kid’s meals sold = 100% – 80% = 20% Step 2: Number of kid’s meals sold = 17 Total number of meals sold =$\frac{17}{20} \times 100 = 85$Q 6 - A small school has 60% boys and rest girls. If the number of boys is 54, what is the total number of boys and girls altogether in the school? ### Answer : C ### Explanation Step 1: Percentage of the boys in school = 60% Number of boys in the school = 54 Step 2: Total number of students =$\frac{54}{60} \times 100 = 90$Q 7 - A fruit store sold red and green apples. If the percentage of red apples sold was 80% and the number of red apples sold was 88, what is the total number of red and green apples sold? ### Answer : B ### Explanation Step 1: Percentage of red apples = 80% Number of red apples = 88 Step 2: Total number of apples =$\frac{88}{80} \times 100 = 110$Q 8 - During a race Jenna jogged for 84 minutes and for the rest, she walked. If the time she jogged was 70% of the total time, what was the total time of the race? ### Answer : D ### Explanation Step 1: Percentage of time Jenna jogged = 70% Number of minutes Jenna jogged = 84 Step 2: Total number of minutes of the race =$\frac{84}{70} \times 100 = 120$minutes Q 9 - A food joint offers buffets with ranch and Caesar dressings. If the buffet uses 60 cases of ranch dressing, which is 48% of all dressings, what is total number of dressings altogether? ### Answer : C ### Explanation Step 1: Number of ranch dressings used = 60 Percentage of ranch dressings = 48% Step 2: Total number of dressings =$\frac{60}{48} \times 100 = 125$Q 10 - At a carnival, the percentage of people who won the ring toss game was 60% and their number was 18. What was the total number of people who played the ring toss game? ### Answer : D ### Explanation Step 1: Number of people who won ring toss game = 18 Percentage of people who won ring toss game = 60% Step 2: Number of persons who played the game =$\frac{18}{60} \times 100 = 30\$

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