If The Ages Of 3 Persons Are 17, 16, And 12, And Another Person Is Added Making The Average Age 20, What Is The Age Of The New Person? - Testpoint

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If the ages of 3 persons are 17, 16, and 12, and another person is added making the average age 20, what is the age of the new person?

40
30
35
None of these

Explanation

Total of 3 ages = 17 + 16 + 12 = 45

New average = 20, for 4 people → Total = 20 × 4 = 80

Age of 4th person = 80 − 45 = 35

Related MCQs

A and B invest Rs. 15,000 and Rs. 20,000, respectively, in a business. After 6 months, C invests Rs. 20,000. If the total profit after 2 years is Rs. 25,000, what is B's share of the profit?

Rs. 8,000
Rs. 9,000
Rs. 10,000
Rs. 12,000

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Explanation

Let's calculate using the capital × time method:

A: 15,000 × 24 = 360,000
B: 20,000 × 24 = 480,000
C: 20,000 × 18 = 360,000

Profit ratio = 360,000: 480,000: 360,000

Simplify:
3 : 4 : 3

Total parts = 3 + 4 + 3 = 10

B's share = $frac{4}{10} times 25,000$

= Rs. 10,000

If the number of chocolates is 20, what is one-third (1/3) of the chocolates?

5
6⅔
10
15

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There are 54 coins in total. Some are 20-cent coins and some are 50-cent coins. Their total value is $20.70. How many 20-cent coins are there

21
23
27
31

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In a class of 20 students, the average height is 150 cm. One student with a height of 155 cm joins the class. What is the new average height?

150 cm
150.24 cm
150.50 cm
151 cm

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The value of the sum of the first 4 multiples of 5 is?

25
30
50
60

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