Let units place digit be y and tens place digit be x then, the number will be 10x + y after interchanging the digits we get new number = 10y+x according to question- (10x+y) – (10y+x) = 45 9x- 9y = 45 x-y= 5 and also, x = y^2-1 now, y^2-1-y = 5 y^2- y - 6 = 0 Solving this quadratic equation, we get y = 3, -2 But here negative value in not possible Hence y = 3 And x = 8 New number will be = 10y + x = 38 50% of the number = 19
Find the ratio of Ram’s age to Rahul’s age.
Statement I: Ram’s age is equal to Alok’s age and Alok age is 2 years l...
Janaki leaves her home everyday at 7:55 a.m and reaches at 9: 25 a.m. However, one day she left her home at 7:55 a.m. but reached office at 09:20:30 a.m...
In each of the following questions, a question is followed by information given in three statements. You have to study the question along with the stat...
What is the value of a two digit number?
Statement I: The sum of the digits of the number is 9.
Statement II: The digit at the tens...
Find the area of a rhombus.
A. Sum of the squares of the diagonals is 256 m².
B. Perimeter of the rhombus is 32 m.
C. Ratio of...
Find the rate of interest per annum on a sum of money invested? Statement I: The difference between the compound interest and simple interest at the e...
What is the yearly salary of Mr. Rohan?
I. Sohan earns Rs. 44000 more than Mohan in a year who earns Rs. 16000 more than Rohan per annum.
...
A shopkeeper sells a homogeneous mixture of A and B at a rate of Rs 320 per kg. Find the profit percentage of the shopkeeper.
Statement I : he b...
The question consists of two statements numbered “I and II” given below it. You have to decide whether the data provided in the statements are suffi...
At what time will a train reach city P from city Q?
I. The 600 meter long train crosses a signal pole in 20 seconds.
II. The another train...
