Aptitude - Area - Discussion

Discussion :: Area - Data Sufficiency 2 (Q.No.1)

Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.

1.

 What is the area of the hall? I. Material cost of flooring per square metre is Rs. 2.50 II. Labour cost of flooring the hall is Rs. 3500 III. Total cost of flooring the hall is Rs. 14,500.

 [A]. I and II only [B]. II and III only [C]. All I, II and III [D]. Any two of the three [E]. None of these

Explanation:

I. Material cost = Rs. 2.50 per m2

II. Labour cost = Rs. 3500.

III. Total cost = Rs. 14,500.

Let the area be A sq. metres.

Material cost = Rs. (14500 - 3500) = Rs. 11,000.

 5A = 11000     A = 11000 x 2 = 4400 m2. 2 5

Thus, all I, II and III are needed to get the answer.

 Navya said: (Jul 16, 2011) 5A/2 means

 Dilip said: (Jun 10, 2012) Yes, Why A is multiplied by 5/2 . . . Please Reply

 Rupam said: (Jun 30, 2013) 5/2 means this : Material cost = 11000 and material cost per sq. Metre = 2.5 or 5/2. So, since 5/2 = 1 sq.mtr. Therefore, 11000 = 11000x(2/5)x1 = 4400.

 Raagul said: (Jul 8, 2016) Thank you @Rupam.

 Soniya said: (Jul 24, 2019) I am not understanding this, please explain.

 Ankita said: (Jun 29, 2020) Total Material cost =14500-3500=rs.11000. The material cost of flooring per square metre is Rs. 2.50. [2.50=5/2. or. 2 and 1/2 i;e 2+1/2 is 5/2]. Hence, 11000/(5/2). 11000*2/5 = 4400.