Question

A man selling computer parts realizes that when

he sells 16 computer parts, his earning is $1700.
When he sells 56 computer parts, his earning is
$4300. What will the earning be if the man sells 30
computers parts?

Answer 1

2610

Explanation:

THE PROFIT GIVEN IS NOT MERELY BASED ON BUYING AND SELLING PRICES. SOME OTHER FACTORS ALSO ARE CONSIDERED.

NOW, IT IS SOLVED BY INTERPOLATION :

PROFIT ON SELLING 30 COMPUTERS

= 1700 + [(4300–1700)/(56–16)](30–16) = 1700 + (2600/40)*14

= 1700 + 910 = 2610