# Author name: Archit Gulia

B. Tech from University School of Information Technology, Govt. of Delhi Ex- Associate Consultant in Wipro Technology MD Super Success Institute Muzaffarnagar

## Selling price of a table is Rs. 6875. If profit percentage is 25 percent, then what is the cost price of table?

Question: Selling price of a table is Rs. 6875. If profit percentage is 25 percent, then what is the cost price of table? Answer: 2. Rs. 5500 Solution: s= Rs. 6875 cost price be cc+0.25c=1.25c=s=6875c= Rs. 5500

## If 72 binders can bind 720 books in 22 days, how many binders will be required to bind 660 books in 12 days?

Question: If 72 binders can bind 720 books in 22 days, how many binders will be required to bind 660 books in 12 days? Answer: 3. 121 Solution:workdone for 1 book= (binders x days) / n.o of books=( 22 x72)/720workdone for 660 books in 12 days for (1 book work)= (binders x 12) /660(binders x

## The simple interest received on a sum for 40 years is 2/5 of the sum. what is the annual rate of interest?

Question: The simple interest received on a sum for 40 years is 2/5 of the sum. what is the annual rate of interest? Answer: 3. 1 percent Solution:formula S.I= PXRXT/(100)2/5X = X(R)(40)/(100)R= 1 percent

## After working for 8 days. Rakhi finds that only 10 percent of the work is completed. She employs Poonam who is 20 percent more efficient than Rakhi. How many more days will they together take to complete the remaining work?

Quesion: After working for 8 days. Rakhi finds that only 10 percent of the work is completed. She employs Poonam who is 20 percent more efficient than Rakhi. How many more days will they together take to complete the remaining work? Answer: 4. 360/11 days Solution: Total work =wRakhi speed to complete work xpoonam speed

## If M:N=9:6, then what is the value of (M+N):(M-N)?

Question: If M:N=9:6, then what is the value of (M+N):(M-N)? Answer: 3. 5:1 Solution: (M+N):(M-N)Dividing it by N on denominator as well as numeratorM/N=x=9:6=3:2(M+N):(M-N)=(x+1)/(x-1)=2.5/.5=55:1

## Marked price of a chair is Rs. 2000. After giving two successive discounts of 20 percent and x percent, the chair is sold for Rs. 1400. What is the value of x?

Question: Marked price of a chair is Rs. 2000. After giving two successive discounts of 20 percent and x percent, the chair is sold for Rs. 1400. What is the value of x? Answer: 12.5 percent Solutions: bulding equation selling price after 1 st dsicount 2000-0.2(2000)=1600building equation after x discount1600-(0.01)x1600=1400200=0.01(x) 16001/8=12.5 percent

## If the length of a rectangle is increased by 14.28 percent, then by how much percentage its breadth should be reduced to keep the area same?

Question: If the length of a rectangle is increased by 14.28 percent, then by how much percentage its breadth should be reduced to keep the area same? Answer: 2. 12.5 percent Solutions:Area of rectangle be x. length be y. breadth be z. new breadth be z1.then x=yzx=(1.1428y)(z1)=yzz1=1/1.1428=0.875z1-1=0.125percentage= 12.5

## Both A and B sells their watch at the rate of Rs. 5000 per watch. A earned a profit of 25 percent while B incurred a loss of 10 percent. What is the ratio od cost prices of Aand B?

Question: Both A and B sells their watch at the rate of Rs. 5000 per watch. A earned a profit of 25 percent while B incurred a loss of 10 percent. What is the ratio of cost prices of A and B? Answer: 2. 18:25 Solution:Creating equations 25 percent profit at a sell of 5000c.p

## A student scores 75% in a test and gets 30 marks more than another student who secured 60%. What is the maximum marks in the test?

Question: A student scores 75% in a test and gets 30 marks more than another student who secured 60%. What is the maximum marks in the test? Answer: 200 Solution: x is total marks . Then equation becomes0.75x=0.6x +300.15 x=30x=200

## In one year, the average monthly expenditure of Sapna was Rs. 1100 for the first 3 months of the year. Rs. 1000 for the next 5 months and Rs.1200 for the last 4 months. If the total annual saving was Rs. 1300, then what was sapna average monthly income ?

Question: In one year, the average monthly expenditure of Sapna was Rs. 1100 for the first 3 months of the year. Rs. 1000 for the next 5 months and Rs.1200 for the last 4 months. If the total annual saving was Rs. 1300, then what was sapna average monthly income ? Answer: 1. Rs 1200

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