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
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
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
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
Question : Rohit buys an old bat for Rs 2320 and spends Rs 180 on its repairing. If he sells it for Rs. 2400 , then what is the loss Answer: 4 is the correct answer Solution : Total money spend on the bat by Rohit (cost price)= Rs 2320+180 = Rs 2500Total loss occur=
Question: There are 44 mangoes, 121 bananas and 11 apples, they have to be arranged in several rows in such a way that every row contains equal number of fruits and each row contains fruit of one type, What is the minimum number of rows? Answer: 16 Solution: HCF of 44,11,121 is 11. each row
Question: Two trains are running in opposite direction with the same speed. If the length of each train is 320 meters and they cross each other in 18 seconds, then what is the speed of each train? Answer: 1. 64 km/hr Solution:Total distance covered by train =320 meterstotal time taken= 18 secondspeed of train(m/s)=640/18speed of
Question: Selling price of an article is Rs. 5175 and discount of 25 percent is offered. What is the marked price of the article? Answer: 2. Rs 6900 Solution: The equation for the following is marked price be m.m-0.25m=51750.75m=5175M=Rs 6900
Question: Rs. 7200 is divided among P,Q and R in the ratio of 1/2:4:3/2 respectively. What is the share of R? Answer: 1. Rs 1800 Solution: adding all the ratio 0.5+4+1.5=66x=7200x=1200R ration=1.5 x =1.5 x(1200)=1800Rs 1800
Question: In an exam, out of total number of appeared students 93 percent student passed and 9275 students failed. What is the total number of students appeared in the exam? Answer: 4. 132500 Solution: 7 percent of student are 92757x=9275x=1325then 100 percentage student=100x=132500