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 Kamiya Gulati India hi..can u give me solution of math puzzle 3...not only answers,,how they are solve.. 19 Mar 1242.109.16.198 Hi Kamiya 1) There are 40 coins in a bag, consisting of $5 and$ 2 coins. If the total amount is Rs. 140, how many $2 and$ 5 coins are there in the bag? Ans : $5 = x so$2 = 40 -x 5x + 2(40 - x) = 140 5x + 80 -2x = 140 3x = 140 -80 3x = 60 x = 20 So 20 each. 2) Four years ago, the average age of A and B was 18 years. At present the average age of A, Band C is 24 years. What would be the age of C after 8 years? Ans : (A + B + C )/3 = 24 A +B + C = 72 4 years ago (A - 4 + B - 4 )/2 = 18 A + B - 8 = 36 A + B = 44 C = 72 -44 C = 28 After 8 years C will be 36 years Similarly you can solve the rest. Anita
 Question asked by Prateek Verma on YouTube √(540.563) = 23.25