instruction:
You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
question:
Question: A man has $480 in the denominations of one-Dollar, five-Dollar notes and ten-Dollar. The number of Dollars of each denomination is equal. What is the total number of Dollar that he has ?

 Option A: 50

 Option B: 60

 Option C: 90

 Option D: 48

 Option E: 67
answer:
Option C


question:
Question: A cab driver 5days income was $25, $50, $60, $65 , $70. Then his average income is?

 Option A: A

 Option B: B

 Option C: C

 Option D: D

 Option E: E
answer:
Option B


question:
Question: (x to power 1/3) - (x to power 1/9)=60
We have to find out the value of x ??

 Option A: 4^9

 Option B: 4^8

 Option C: 4^7

 Option D: 4^6

 Option E: 4^5
answer:

Option A