ADDITIONAL      MATHS        Problems 1.   A father left a will of Rs.35 lakhs between his two daughters aged 8.5 and 16 such that they may get equal amounts when each of them reach the age of 21 years. The original amount of Rs.35 lakhs has been instructed to beinvested at 10% p.a. simple interest. How much did the elder daughter get at the time of the will?              (A)Rs. 17.5 lakhs        (B)Rs. 21 lakhs  (C)Rs. 15 lakhs            (D)Rs. 20 lakhs     Ans : B 2. What will Rs.1500 amount to in three years if it is invested in 20% p.a. compound interest, interest being compounded annually? (A)2400        (B)2592       (C)2678   (D)2540      Ans : B 3. If a sum of money grows to 144/121 times when invested for two years in a scheme where interest is compounded annually, how long will the same sum of money take to treble if invested at the same rate of interest in a scheme where interest is computed using simple interest method? A)9 years     (B)22 years    (C)18 years     (D)33 years     Ans : B 4. The population of a town was 3600 three years back. It is 4800 right now. What will be the population three years down the line, if the rate of growth of population has been constant over the years and has been compounding annually? (A)6000         (B)6400         (C)7200         (D)9600         Ans : B 5. A man invests Rs.5000 for 3 years at 5% p.a. compound interest reckoned yearly. Income tax at the rate of 20% on the interest earned is deducted at the end of each year. Find the amount at the end of the third year. (A)5624.32    (B)5630.50    (C)5788.125     (D)5627.20   Ans : A 6. The difference between the compound interest and the simple interest on a certain sum at 12% p.a. for two years is Rs.90. What will be the value of the amount at the end of 3 years? (A)9000      (B)6250         (C)8530.80      (D)8780.80    Ans : D

MATHS   PERCENTAGE  TEST 1. If 37% of a number is 990.86, what will be approximately the 19% of that number (A) 600    (B) 400    (C) 500    (D) 700 2.  A number, on subtracting 15 from it, reduces to its 80%.What is 40% of that number? (A) 60    (B) 45    (C) 30    (D)90 3.  If ¾ of the number is 40 more than 40% of the same number.What is the number: (A) 100     (B) 150     (C) 200    (D) 400 4. In library, 20% books are in hindi, 50% of the remaining in English and the remaining 9000 are in various other languages. What is the total number of books in english ? (A) 4000     (B) 3000    (C) 2250     (D) None 5. Avinash spends 30% of his income on scooter petrol, ¼ of the remaining on house rent and balance on food. If he spends Rs 300 on petrol, Then what is the expenditure on house rent? (A) 525    (B) 1000   (C) 675    (D) 175 6.     35% of 30 = 25% of ? +1 (A) 28    (B) 38     (C) 42     (D) 32 7.   ? of 6144 = 2 ½ x 245.76 (A) 16   (B) 20    (C) 5    (D) 10 8.   12.5 of 192 = 50% of ? (A) 48    (B) 96    (C) 24    (D) None 9.    45% of ? + 30% of 90 = 30% of 210 (A) 120    (B) 80    (C) 60    (D) 90 10.  one fourth of one third of two fifth of a number is 15. What will be 40% of that number? (A) 120    (B) 350     (C) 270    (D) 180 11.   If the cost price of 12 tables is equal to 16 tables, the loss % is (A) 15   (B) 20    (C) 25    (D) 30 12.  A man buys oranges at Rs 5 a dozen and an equal number at Rs 4 a dozen. He sells them at Rs 5.50 a dozen and makes a profit of Rs 50. How many dozens of oranges he buy? (A) 30    (B) 40    (C) 50    (D) 60