Question:Six years ago material M cost $10 per kg and the price index most appropriate to the cost of material M was 130. The same index now stands at 510.
What is the best estimate of the current cost of material M per kg?
A. $2.55
B. $39.23
C. $51.00
D. $29.23
The correct answer is:$39.23
$10 × 510 ÷ 130 = $39.23