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on the first day of the sale of tickets of drama, in all 35 tickets were sold. If the rates tickets were Rs.20 and Rs.40 per ticket and toral collection was Rs. 900, find the number tickers sold of each rate of tickets [5 Marks]

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Answer: Let, No. of tickets sold at Rs. 20 be ‘ x’ No. of tickets sold at Rs. 40 be ‘ y’ According to the first condition, x + y = 35 ——————————–A According to the second condition, 20x + 40y = 900 Dividing above equation by 20 on both sides x + 2y = […]

on the first day of the sale of tickets of drama, in all 35 tickets were sold. If the rates tickets were Rs.20 and Rs.40 per ticket and toral collection was Rs. 900, find the number tickers sold of each rate of tickets [5 Marks] Read More »

Solve the following simultaneous equations:

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Answer: Let , now, equations become, 7m + 13n = 27 ——–A 13m + 7n = 33 ——– B adding A and B, 7m + 13n = 27 13m + 7n = 33 20m + 20n = 60 dividing above equation by 20 on both sides now, m + n = 3 —————C subtracting equation

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A three digit number is equal to 17 times the sum of its digits. If 198 is added to the number , the digits are interchanged . The addition of first and third digit is 1 less than middle digit. Find the number. [5 marks]

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Answer: Let the ones place digit be z tens place digit be y hundredth place digit be x then , the original number = 100x + 10y + z Interchanged number = 100z+ 10y + x According to the 1st condition, 100x +10y + z =17(x + y +z) 100x +10y + z =17x +

A three digit number is equal to 17 times the sum of its digits. If 198 is added to the number , the digits are interchanged . The addition of first and third digit is 1 less than middle digit. Find the number. [5 marks] Read More »