Question

A car commercial boasts that its brand is the most reliable brand based upon research. Which of the following types of information collection would be the most relevant and credible:
A. Survey of Chevrolet owners
B. Survey of car dealership mechanics from 2002 to 2012
C. Report of mechanical repairs by all Chevrolet dealerships
D. Report of mechanical repairs by Toyota, Honda, and Chevrolet dealerships
E. Report of mechanical repairs made on all types of cars by independent repair shops over the last five years​

Answer 1

Answer:

C is the answer

Explanation:

The present ages of Dishan and Ishika are in the ratio 6: 5. Four years ago, the ratio of their ages was 4:3. Find their present ages.