Basic Algebra Questions discussed in this video 1. A boy was asked to multiply a certain number by 50. He multiplied it by 30 and got his answer less than the correct answer by 400. The number which was to be multiplied was: a) 10 b) 20 c) 30 d) 40 2. 0.6 times a number is equal to 0.08 times another number. The ratio of the two numbers is: a) 3:4 b) 4 : 3 c) 2 : 15 d) 2 : 9 3. A boy was asked to find the value of 3/8 of a sum of money. Instead of multiplying it by 3/8 he divided it by 3/8. His answer exceeded by Rs. 55. Find the correct answer. a) Rs 9 b) Rs 24 c) Rs 64 d) Rs 1320 4. The sum of two numbers is 40 and their product is 375. What will be the sum of their reciprocals. a) 8/75 b) 1/40 c) 75/8 d) 75/4 5. The sum of three consecutive numbers each divisible by 3 is 72. What is the largest among them? a) 21 b) 24 c) 27 d) 36 6. A student was asked to find the arithematic mean of the following 12 numbers: 3, 11, 7, 9 ,15, 13, 8, 19, 17, 21, 14 and x. He found the mean to be 12. The value of x will be: a) 3 b) 7 c) 17 d) 31

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