VERY IMPORTANT: Remember that the weighted average/combined average/mean value is always written in the middle and the averages are written at the top. We write the smaller average/value in the left and greater one in the right. The mean value is subtracted from the value written in the right, and

QUESTIONS ON AVERAGE (PART-3) QUERY 21 The average of marks scored by 35 students is 72. If the marks secured by 1 student were written as 36 instead of 86, find the current average. A) 73 B) 73.43 C) 75 D) 74.25 MAHA GUPTA Total of marks to be increased

QUERY 61 A man bought two baskets full of mangoes for Rs 19.80 and Rs 34.65. Cost of each mango is not less than 24 paise and not greater than 36 paise. The total number of mangoes bought by him is? A) 135 B) 145 C) 155 D) 165 MAHA

QUERY 21 There are five hobby clubs in a college. The gardening group meets every second day, the electronic group meets every third day, the chess group meets every fourth day, the cricket club meets every fifth day and the photography group meets every sixth day. How many times do

QUERY 21 3⁄1².2² + 5⁄2².3² + 7⁄3².4² + 9⁄4².5² + 11⁄5².6² + 13⁄6².7² + 15⁄72.82 + 17⁄8².9² + 19⁄9².10² = ? A) 1⁄100 B) 99⁄100 C) 101⁄100 D) 1 MAHA GUPTA 3⁄1².2² + 5⁄2².3² + 7⁄3².4² + 9⁄4².5² + 11⁄5².6² + 13⁄6².7² + 15⁄7².8² + 17⁄8².9² + 19⁄9².10² = 2²-1²⁄1².2² + 3²-2²⁄2².3² + 4²-3²⁄3².4²

SUM OF SERIES, SUM OF NUMBERS AND SUM OF DIGITS QUERY 11 Find the value of 1 × 2 + 2 × 3 + 3 × 4 + 4 × 5 + 5 × 6 + 6 × 7 + 7 × 8 + 8 × 9 + 9 × 10 +

QUESTIONS ON PARTNERSHIP (PART-II) QUERY 11 A and B entered into partnership with capitals in the ratio 4 : 5. After 3 months, A withdrew 1/4 of his capital and B withdrew 1/5 of his capital. The gain at the end of 10 months was Rs 760. A’s share in

QUESTIONS ON INSTALLMENTS [PART-II] QUERY 11 Rs 9000 was borrowed at 20% p.a. compound interest to be repaid in two equal annual installments. What is the value of each installment? A) 5097.95 B) 4987.90 C) 5890.91 D) 5820.25 MAHA GUPTA 9000 is the Principal Rate of interest = 20% Therefore,

QUESTIONS ON SIMPLE INTEREST (PART-II) QUERY 11 The difference between the simple interest received from two different sources on Rs 1500 for 3 years in Rs 13.50. The difference between their rates of interest is? A) 0.1% B) 0.2% C) 0.3% D) 0.4% MAHA GUPTA Difference of interest for 1

QUESTIONS ON SIMPLE INTEREST (PART-I) QUERY 1 Ramesh borrows Rs 7000 from a bank at SI. After 3 years he paid Rs 3000 to the bank and at the end of 5 yrs from the date of borrowing he paid Rs 5450 to the bank to settle the account. Find