Mathematics MCQs
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4121.If 3x : 2y = 6 : 5, what is the ratio of x and y?
4122.If a value increases from 80 to 80, what is the percentage increase?
4123.If x + 1/x = 3, then what is the value of x³ + 1/x³?
4124.Solve the equation 3/x + 2/x+1 = 1. What is the value of x?
4125.If A and B together complete a work in 12 days and B alone can do it in 20 days, how many days will A alone take to complete the work?
4126.If an item costs Rs. 180 and is sold at a 20% profit, what is the selling price?
4127.If an item is sold for Rs. 2400 at a 20% loss, what was its actual (cost) price?
4128.If the mean of 3 ages is 15 and the ages of two persons are 10 and 20, what is the age of the third person?
4129.If the ratio of boys to girls is 5:3 and there are 40 boys, how many girls are there?
4130.If x + 1/x = 5, then what is the value of x² + 1/x² = _____?