Login / Signup

Question

span >The average of some natural numbers is 15. If 30 is added to first number and 5 is subtracted from the last number the average becomes 17.5 then the number of natural number is ?

A 10

B 30

C 20

D 15

Practice Next

More Average Questions

The average age of (x + 7) trainees is 17 years. When a 39-year-old trainer joins, the average becomes 18 years. Find x% of 500.
The average weight of 4 persons is 50 kg. The heaviest person’s weight is 20 kg more than the lightest person’s weight. If the average weight of the rest t...
The average length of 60 pipes is 120 cm. When two pipes of lengths (n + 15) cm and (n - 5) cm are added, the average length becomes 121 cm. Find the value...
The average of 25, 46, and ‘y’ is 28. What is the value of ‘y’?
The average age of six members of a family is 40 years. If the age of a guest is included, then the average age increases by 12.5%. What is the age (in yea...
The average daily income of a daily wage worker, in the month of February is Rs. 120. If his average income on 1st 12 days of the month is Rs. 80 and on la...
In an examination the average marks of Rohit is 60. If he got 15 more marks in science and 21 more marks in maths then his average would have been 66. Find...
The ages of 5 children are 8, 10, 12, 14 and 16 years. Find their average age.
The average weight of a group of five persons, A, B, C, D, and E is 62 kg. If another person K joins the group then the average weight of the group is decr...
The average value of the property of Priya, Aanya and Raghav is Rs. 102 lacs. The value of the property of Priya is Rs. 48 lacs less than that of Aanya, an...

Hey! Ask a query

ask-question