Question
A car takes 15 hours less to travel from point 'G' to
point 'H' at a speed of 45 km/h than it takes to travel at 15 km/h. If 60% of the distance is covered at 54 km/h and the rest at 27 km/h, what is the total time taken for the journey?Solution
Let the distance be, d km. According to the question: 
If 3, x, y, 48 are in GP and x, y, 45 in AP, find x and y.
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.
When the profit obtained by selling an item for Rs. 768 is the same as the loss suffered when the item is sold for Rs. 312. What ...
The median of the following data will be ___
32,25,33,27,35,29,14,26 and 30.
Find the mode of the following data:
The 5th term of an AP is 23 and the 12th term is 51. Find the 20th term.
In an arithmetic progression, the 4th term is 23 and the 9th term is 48. What is the sum of the first 20 terms?
If p = q + 2, where q is the product of six consecutive positive integers, then which of the following is/are true? Â
a. p is a perfect cube
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
If a, b, c are in geometric progression and a + b + c = 14, a² + b² + c² = 84, find a, b, c.
