Scholastic Aptitude Test Questions with Answers - 1

Question: 1

The average age of 5 members is 21 years. If the age of the youngest member be 5 years, find out the average age of the family at the birth of the youngest member.

(A) 20 years

(B) 24 years

(D) 30 years

View Answer

Ans: A

Total age of 5 members = 21 × 5 = 105 years.

Total age of 4 members at the birth of the younger member, that is 5 years ago

= 105 - (5 × 5) = 80 years.

Before the birth of the youngest member, the family consisted of only 4 members.

Average age of 4 members 5 years ago = $${80}/{4}$$ = 20 years.

Question: 2

Total temperature for the month of September is 840°C. If the average temperature of that month is 28°C. Find out the number of days is the month of September.

(A) 10 days

(B) 20 days

(D) 40 days

View Answer

Ans: C

Number of days in the month of September

= $${Total temperature} / {Average temperature}$$ = $${840}/{28}$$

= 30 days.

Question: 3

The average age of four brothers is 12 years. If the age of their mother is also included, the average is increased by 5 years. The age of their mother (in years) is

(A) 30 years

(B) 37 years

(D) 48 years

View Answer

Ans: B

Let the age of the mother be x years

∴ $${14 × 12 + x} / {5}$$ = 17

⇒ x = 37.

Question: 4

Find the average of consecutive odd numbers 21, 23, 25, 27, 29, 31, 33, 35.

(A) 25

(B) 27

(D) 30

View Answer

Ans: C

The required average

= average of middle two numbers

= average of 27 and 29

= $${27 + 29} / {2}$$ = 28

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Scholastic Aptitude Test Questions with Answers - 1

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