Maths MCQs

By selling 36 m of jute, a shopkeeper gains an amount equal to the selling price of 12 m of jute. Find the gain percentage. Options a) 50%b) 40%c) 45%d) 55% Solutions As per questionsSP = 3CP = 2P = SP – CPP = 3 – 2P = 1P% = P% = 50% Ans: a) […]

A 725 m long train passes a tunnel 235 m long in 48 second. Find the speed of the train. Options a) 42 km/hb) 72 km/hc) 36 km/hd) 100 km/h Solutions As per solutionD = 725 + 235 mD = 960T = 48 sec.S = ?S = S = S = 20 m/sec.S = S

The salaries of Ravi and Sumit are in the ratio 4 : 5, If the salary of each is increased by Rs 6,000 the new ratio becomes 35 : 40, What will be Sumit’s increased salary? Options a) Rs. 26,000b) Rs. 36,000c) Rs. 16,000d) Rs. 160,000 Solutions As per questionThe salaries of Ravi and Sumit

Anu is four times as good as Binni in completing a task. Together they finish the same task in 7 hours. In how many hours will Anu alone complete the task? Optionsa) 22b) 35/4c) 31/4d) 24 Solutions As per question Effciency of Anu = 4mEffiency of Binni = 1mEffiency of Both = 5mTotal work =

P, Q and R can complete a work in 10 days, 20 days and 30 days, respectively, working alone. How soon can the work be completed if P is assisted by Q and R on alternate days? Options:a) 7 daysb) 9 days c) 5 daysd) 6 days Solution As per questionL.C.M. = 10 , 20

The greatest number that will divide 398, 437 and 5425 leaving 7, 12 and 2 as remainders, respectively, is : Options a) 11b) 15c) 17d) 19 Solution As per question Numbers = 398 , 437 , 5425Remainder = 7 , 12 , 2Subtract the Remainder from numbers = 391 , 425 , 5423Factors of No.

The average of 10 observations is 46. It was realized later that an observation was misread as 42 in place of 142. The correct average is: Options:a) 52b) 46c) 58d) 56 Solution As per questionSum of all No. = 46 x 10 = 460Correct sum = 460 + 142 – 42 = 560Correct average =

Divide Rs 2,760 in to two parts such that when these are invested for 2 and 4 years, respectively, at the rate of 5% per annum simple interest, the amounts received are equal. What is the second part (in Rs) invested? Optionsa) 1100b) 1500c) 1320d) 1440 Solution As per questionLet First Part is a and

A person crosses a 1600 m long street in 4 min. What is his speed (in km/h)? Options:a) 22b) 14c) 20d) 24 Solution: Distance = speed x time as per questions distance = 1600m =1.6kmTime = 4 min.=4/60 hr.Speed =? speed =speed =speed =24 km/h Ans: 24 km/h

A chair is sold for Rs 720 after giving a discount of 10% on its marked price. The cost price of the chair is Rs 640. If it is sold at the marked price, then the profit percentage will be: Optionsa) 30%b) 20%c) 18%d) 25% Solutions As per questionsMP x .9 = SP MP x .9 = 720 Rs.MP =