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Question
A painter has painted one-third of a rectangular wall which is ten feet high. When he will paint another 75 square feet of that wall, he will have finished three-quarters of the job. What is the length (the horizontal dimension) of the wall?
18 feet
12 feet
10 feet
9 feet
ANSWER : 1
Descrption
<p>Given that hight of the wall is 10 m</p> <p>Let Base of the wall is x m</p> <p>Area of wall is 10x sq m</p> <p>Three - quarter = 3/4</p> <p>ATQ = According to the question</p> <p>(3/4 - 1/3) part of wall = 75 sq m</p> <p>So, 1 part of wall = 180 sq m</p> <p>Rectangular base of the wall is 180/10 = 18 m</p> <p>Ans. 18 m</p>
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