A

Akash Lawaniya • 9.58K Points
Tutor III Math 

Q. The average height of 35 girls in a class was calculated as 160 cm. It was later found that the height of one of the girls in the class was wrongly written as 144 cm, whereas her actual height was 104 cm. What is the actual average height of the girls in the class? ( rounded off to 2 digits after decimal)-

  • (A) 158.54 cm
  • (B) 158.74 cm
  • (C) 159.56 cm
  • (D) 158.86 cm
Correct Answer - Option(D)
Explanation by: Akash Lawaniya 
Correct sum
= (160 × 35 + 104 - 144) cm
= 5560 cm
∴ Actual average height
= (5560/35)
 cm
= 158.857 cm ≈
158.86 cm

You must be Logged in to update hint/solution

Discusssion

Login to discuss.

Loading comments.....

Related MCQs on Math

Q. The least five digit number which is divisible by 666 is

Q. A man is 24 years older than his son. In two years, he will be twice his son’s age. What would...

Q. Price of milk has incresed bby 20%. To keep the expenditure unchanged, the present consumption is to...

Q. A sum of money placed at compound interest doubles itself in 4 years. In how many years will it amou...

Q. If the difference between the compound interest and the simple interest on a certain sum at the rate...

Q. At what time between 8 and 9 o'clock will the hands of a clock be at right angle ?

Q. A boy was asked to find 3/5 of a fraction. Instead, he divided the fraction by 3/5 and got an answer...

Q. A and B undertook to do a piece of work for Rs.4500. A alone could do it in 8 days and B alone in 12...

Q. The speed of A and B are in the ratio 3 : 4. A takes 20 minutes more than B to reach a destination. ...

Q. What is the difference between the compound interest and simple interest calculated on an amount of ...

Learn All Math MCQs

Download our easy to use, user friendly Android App from Play Store. And learn MCQs with one click.

Image