If x is 20 percent more than y and y is 50 percent less than z, then x is what percent of z?
A. 500%
B. 250%
C. 500/3%
D. 125%
E. 60%
* A solution will be posted in two days.
If x is 20 percent more than y and y is 50 percent less than
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- Max@Math Revolution
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- OptimusPrep
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Since x and z are given in terms of z, we should assume the value of y to solve the question.Max@Math Revolution wrote:If x is 20 percent more than y and y is 50 percent less than z, then x is what percent of z?
A. 500%
B. 250%
C. 500/3%
D. 125%
E. 60%
* A solution will be posted in two days.
Assume y = 100,
Hence x = 120 and z = 200
(120/200) * 100 = 60%
Correct Option: E
Last edited by OptimusPrep on Wed May 04, 2016 7:21 pm, edited 1 time in total.
- Max@Math Revolution
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From the question, we get x=1.2y and y=0.5z. By substitution, we can get x=1.2y=1.2(0.5)z=0.6z. Hence, the answer is 60% and E is the correct answer choice.
- Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.
- Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.
Math Revolution
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Score an excellent Q49-51 just like 70% of our students.
[Free] Full on-demand course (7 days) - 100 hours of video lessons, 490 lesson topics, and 2,000 questions.
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Email to : [email protected]