When 70% of a number x is added to another number y, the sum becomes 165% of the value of y. When 60% of the number x is added to another number z, then the sum becomes 165% of the value of z. which one of the following is correct?
- Az < x < yCorrect
- Bx < y < z
- Cy < x < z
- Dz < y < x
Explanation
Let's break down the problem into two statements:
Statement 1: "When 70% of a number x is added to another number y, the sum becomes 165% of the value of y." This can be written as: 0.7x + y = 1.65y Subtract y from both sides: 0.7x = 1.65y - y 0.7x = 0.65y To compare x and y, we can write x = (0.65 / 0.7)y = (65 / 70)y = (13 / 14)y. Since 13/14 is less than 1, it implies that x is less than y (x z).
Combining the two findings: From Statement 1: x z (which means z < x)
Putting these together, we get z < x < y.
Now let's check the options: A) z < x < y - This matches our derived relationship. B) x < y < z - Incorrect. C) y < x < z - Incorrect. D) z < y < x - Incorrect.
Therefore, option A is correct.
The final answer is A.

Related questions
More UPSC Prelims practice from the same subject and topic.
- Prelims 2024CSATQuantitative Aptitude
Which is the least possible number of cuts required to cut a cube into 64 identical pieces?
- Prelims 2024CSATQuantitative Aptitude
The average weight of A, B, C is 40 kg, the average weight of B, D, E is 42 kg and the weight of F is equal to that of B. What is the average weight of A, B, C, D, E and F?
- Prelims 2024CSATQuantitative Aptitude
What is the number of numbers of the form 0.xy, where x and y are distinct non-zero digits?
- Prelims 2024CSATQuantitative Aptitude
The sum of three consecutive integers is equal to their product. How many such possibilities are there?
- Prelims 2024CSATQuantitative Aptitude
There are 9 cups placed on a table arranged in equal number of rows and columns out of which 6 cups contain coffee and 3 cups contain tea. In how many ways can they be arranged so that each row should…
- Prelims 2024CSATQuantitative Aptitude
One non-zero digit, one vowel and one consonant from English alphabet (in capital) are to be used in forming passwords, such that each password has to start with a vowel and end with a consonant. How …