If a certain sum of money doubles itself in 7 years 8 months at simple interest, then what will be the yearly rate of interest (in %)?
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A trader sells two items at the rate of Rs 400 each. If he gains 15% on one and losses 15% on other, then what is the value (in Rs) of loss ?
If A : B = 1 : 4 and B : C = 2 : 3, then what is A : B : C?
If x/y = 2/3, then what is the ratio of (3x + 2y) and (3x – y)?
If the rice is sold at Rs 56 per kg, there would be a 40% loss. To earn a profit of 20% what should be the price of rice (per kg)?
If the profit is 20%, then what will be the ratio of cost price to selling price respectively?
In a school 60% of the students are girls. If number of boys is 480, then what is the total number of students in the school?
If one-third of a number is 45, then what will be the 45% of that number?