Aptitude Interview Question:

A power cable is to be run from a power plant on the bank of a river 900 meters wide to a factory that is located 3000 meters downstream on the opposite bank. If the cost of laying cable under water is Rs. 5 per meter and that of laying overhead on land is Rs. 4 per meter, find the point downstream where the cable is to cut across the river.
(a) 450
(b) 3900
(c) 1800
(d) 2100
(e) 2700

Submitted by: Administrator

tht point downstream where the cable is to cut across the river = 3000-900=2100
so the answer is 2100.
if cost is to be calculated then (2100*4)+(2100*5)=18900
Submitted by: Administrator