Question
Select the option that is related to fifth number in the
same way as the second number is related to the first number and the fourth number is related to the third number. 14 : -210 :: -19 : 285 :: 22 : ?Solution
The logic followed here is second number and fourth number is obtained by multiplying first number and third number by -15 respectively. In 14 : -210 → 14 x -15 = -210 In -19 : 285 → -19 x -15 = 285 Similarly, in 22 : ? → 22 x -15 = -330
The average of a group of observations is 34.4. If every observation is scaled by a factor of 2.5, what will the resulting averag...
The average age of three children is 20 years. If their ages are in the ratio 2:3:5. Find the age of the youngest child.
The average age of 6 employees in a company rises by 2 years when a new employee’s age is added. If the sum of the initial average age of the 6 employ...
Seven successive numbers have an average of 59. What is the total of their lowest and highest numbers?
The average marks of 22 students is 64. If x new students join with an average of 75 marks, the class average increases to 66. Find x.
25 students go for a picnic. 10 of them spent Rs. 64 each on their food and rest spent Rs.4 more than the average expenditure of all 25. What was the to...
Suresh received 100, 92, 85, 97, 90 and 88 marks in his semester exams. What is his average score?
Average run scored by a batsman in 16 innings is 40. In next 6 innings, he scored runs with an average of ‘x’ so that his overall average increases ...
In a workshop of 50 participants, the average age is 40 years. One participant aged 38 leaves, and 5 new participants with an average age of 44 join. Wh...
The average age of 4 children in a family is 30% of the average age of the mother and the youngest child. The total age of the father and the eldest chi...