$20$ students have each atleast one of the three kinds of candy bars that a school store sells. If $3$ students have sampled all three kinds, and $5$ have sampled exactly two kinds, calculate the number of students who have sampled only one kind.

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Solution

The correct option is B $12$
Given that 20 students in class in this 3 student 3 kind of candy and 5 students two kind of candy
Then in class perched one kind of candy =20-3-5=12

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Q. In a group of 75 students, each has at least one vehicle, except 10 students which have none of the three vehicles. There are 40 students who have a car, 30 have a scooter and 20 have a bike. Also, it is known that 11 students have both car and bike, 12 have both bike and scooter, and 12 have both car and scooter.

Q. How many students have only two vehicles?

(1-3): In a group of 75 students, each has at least one vehicle, except 10 students who have none of the three vehicles. There are 45 students who have a car, 35 have a scooter and 25 have a bike. Also, it is known that 11 students have both cars and bikes, 12 have both bikes and scooters, and 12 have both cars and scooters.

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Candy bars were distributed equally among students of a class. The number of candy bars each student got was one-eighth of the number of students. Had the number of students been half, each student would have got 16 candy bars. What is the total number of candy bars that were distributed? [4 MARKS]

(a) Candy bars were distributed equally among students of a class. The number of candy bars each student got was one-eighth of the number of students. Had the number of students been half, each student would have got 16 candy bars. What is the total number of candy bars that were distributed?

(b) Reduce to simplest form.

(i) $\frac{6}{3} + (\frac{- 1}{6})$

(ii) $\frac{- 3}{2} - \frac{3}{8}$

(iii) $\frac{- 9}{6} + (\frac{- 3}{5})$

(iv) $\frac{- 1}{3} - (\frac{- 3}{5})$

[4 MARKS]

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20 students have each atleast one of the three kinds of candy bars that a school store sells. If 3 students have sampled all three kinds, and 5 have sampled exactly two kinds, calculate the number of students who have sampled only one kind.

The correct option is B 12Given that 20 students in class in this 3 student 3 kind of candy and 5 students two kind of candy Then in class perched one kind of candy =20-3-5=12

$20$ students have each atleast one of the three kinds of candy bars that a school store sells. If $3$ students have sampled all three kinds, and $5$ have sampled exactly two kinds, calculate the number of students who have sampled only one kind.

The correct option is B $12$
Given that 20 students in class in this 3 student 3 kind of candy and 5 students two kind of candy
Then in class perched one kind of candy =20-3-5=12