69
78
96
Cannot be determined
The sum of the digits of two-digit number is 10, while when the digits are reversed, the number decrease by 54. Find the changed number.
The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is
The sum of the number of boys and girls in a school is 150. If the number of boys is x, then the number of girls becomes x% of the total number of students. How many boys are there in the school?
The sum of the numerator and denominator of a positive fraction is 11. If 2 is added to both numerator and denominator, the fraction is increased by 1/24. The difference of numerator and denominator of the fraction is
The sum of the present ages of a father and his son is 60 years. Six years ago, fathers age was five times the age of the son. After 6 years, sons age will be:
The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:
The sum of three consecutive natural numbers each divisible by 3 is 72. What is the largest among them?
The sum of three numbers is 98. If the ratio of the first to second is 2 :3 and that of the second to the third is 5 : 8, then the second number is:
The sum of two numbers is 15 1/3 and their difference is 4 2/3. The product of the number is
The sum of two numbers is 20 and their product is 75. What is the sum of their reciprocals?
