Instructions

The table provided displays the estimated cost (in ₹ lakh) for the construction of a canal between two points.

Based on the information in the table, answer the questions that follow.

Question 64

If the length of the canal to be laid each year is proportional to the estimated cost for materials and labour, what fraction of the total length is intended to be completed by the third year?

Name: If the length of the canal to be laid each year is proportional to the estimated cost for materials and labour, what fraction of the total length is intended to be completed by the third year?
Uploaded: 2026-04-12T17:16:09.152226+05:30
Duration: 9 min 56 s
Description: If the length of the canal to be laid each year is proportional to the estimated cost for materials and labour, what fraction of the total length is intended to be completed by the third year?

Solution

First, let us note down the table and find out the sum of the costs across the rows and columns:

The total cost of materials and labour for the four years = 375 + 262.5 + 64.5 + 96 + 97.7 = 897.5
By the third year, the cost = 897.5 - 112.5 - 90 - 24 - 31.5 - 27 = 612.5

=> The % of project completed = 612.5/897.5 = 0.682 [Option-B]

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