Dr. A.K. Public School Akbarpur Ambedkar nagar 2019-2020 Periodic Test-3 Subject-Mathematics Time-3hrs. Class-8th M.M-20 NOTE:-All questions are compulsory. 1) Choose the correct option. i. 7x²-19x-6= a) (x-3) (7x+2) b) (x+3) (7x-2) c) (x-3) (7x-2) d) NOT ii. 5t-3=3t-5, then t=? a) 1 b)-1 c) 2 d)-2 iii. 5%of which no. is 12? a) 120 b) 180 c) 240 d) 320 iv. The price of watch including 10%VAT is 825Rs. What is its basic price? a) 742.50 b) 775 c) 750 d) 907.50 2) Mohit bought a CD for 750Rs. and sold it for 875. Find his gain percent. 3) A Survey of 20 family of a locality and find out the number of children in each family are given below2,2,3,1,1,2,3,2,4,4,1,4,2,3,1,5,5,5,3,4,5 Prepare the frequency distribution of data. 4) Find the single discount equivalent to two successive discounts of 20% and 10%. 5) The following table shows the expenditure in percentage incurred on the construction of a house in a city. Item Brick Cement Steel Labour Miscellaneous Expenditure 15% 20% 10% 25% 30% Represent the above data by pie chart. 6) Divide 4500 into two parts such that 5%of the first part is equal to 10%of the second part. 7) From a well shuffled deck of 52 cards, one card is drawn at random. Find the probability of getting, i) a red card? ii) a face cards. 8) Evaluate:i. (502)²-(498)² ii. 16a²-114 9) Define Data, and Statistics. Dr. A.K. Public School Akbarpur Ambedkar nagar 2019-2020 Periodic Test-3 Subject-Mathematics Time-3hrs. Class-7th M.M-20 NOTE:-All questions are compulsory. 1) Choose the correct option. i. 5x-6=4x-2, find x=? a) x=4 b) x=3 c) x=2 d) x=6 ii. The Ratio of 2:5 as rate percent is a) 4% b) 0.4% c) 40% d) 14% iii. (x-3)/(x+1)=1/2 a) 1 b) 2 c) 3 d) 4 iv. If A: B=2:3 and B: C=4:5thenC: A=? a) 15:8 b) 6:5 c) 8:5 d) 8:15 2) Shanta borrowed 6400Rs. from the state Bank of India for 2year at 6% p.a. What amount will she clear for her debt? 3) An article was bought for 400Rs. and sold for Rs 336. Find the gain or loss percent. 4) In an examination, 72% of the total examinees passed. If the no. of failure is 392.Find the total no. of examinees. 5) The length of the shadow of 3m high pole at a certain time of the day is 3.6m, what is the height of another pole whose shadow at that time is 54m long? 6) If the third proportional to 7 and x is 28. Find the value of x. 7) Four-fifth of a number is greater than three-fourth of the no. by 4. Find the number. 8) Convert into decimal. i).45% ii) 3.6% 9) What must be subtracted from each of the number 23, 40, 57, and 108 so that the remainders are in proportion?