Question
The average weight of a class of 25 student is 60 KG. If X is student joined the class, than the average weight of whole class increases by (2X – 7)Kg. Find the value of X if the weight of whole class increases by 390 KG.
More Arithmetic Progression Questions
- If 8 times the eighth term of an Arithmetic Progression (AP) is equal to 12 times its twelfth term, then the 20th term of the AP will be
- The arithmetic mean and geometric mean of two numbers are 7 and 2√10 respectively, then find the numbers.
- What is least number which when successively divided by 6, 4 and 4 leaves a remainder 5, 3 and 3 respectively?
- The number 8192 is which term in the following geometric sequence 2, 8, 32, 128, . . . . . . .
- The arithmetic means of the following data is.23,17,20,19,21,20,20
- The 5th term of an AP is 23 and the 12th term is 51. Find the 20th term.
- If p:q = 5:7 and p + q = 408, then find the value of (q - p).
- The mode and the mean of grouped data are 25 and 29.5 respectively. Find the median, correct to two places of decimal, using empirical relation.
- The fourth term of an arithmetic progression is 6. Then the sum of first seven terms is:
- The sum of first 'n' natural numbers is 465. Find 'n'.
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