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.

[EX Q]: Question: A certain car's price decreased by 2.5% (from the original price) each year from 1996 to 2002, during that time the owner of the car invested in a new carburetor and a new audio system for the car, which increased car's price by $2,000. If the price of the car in 1996 was $22,000, what is the car's price in 2002?

Option A: $18,400

Option B: $19,500

Option C: $20,200

Option D: $20,700

Option E: $21,100
[EX A]: Option D

[EX Q]: Question: Rs. 6000 is lent out in two parts. One part is lent at 5% p.a simple interest and the other is lent at 10% p.a simple interest. The total interest at the end of one year was Rs. 450. Find the ratio of the amounts lent at the lower rate and higher rate of interest?

Option A: 5:1

Option B: 5:5

Option C: 5:8

Option D: 5:4

Option E: 5:2
[EX A]: Option B

[EX Q]: Question: This topic is locked. If you want to discuss this question please re-post it in the respective forum.
Matt and Peter can do together a piece of work in 20 days. After they have worked together for 12 days Matt stops and Peter completes the remaining work in 16 days. In how many days Peter complete the work separately.

Option A: 26 days

Option B: 27 days

Option C: 23 days

Option D: 35 days

Option E: 40 days
[EX A]:
Option E