An enterprising businessman earns an income of Re 1 on the first day of his business. On every subsequent day, he earns an income which is just double of that made on the previous day. On the 20th day of business, he earns an income of:
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In an examination, a student scores 4 marks for every correct answer and loses 1mark for every wrong answer. If he attempts all 90 questions and secures 140 marks, the number of questions he attempts correctly, is: |
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Anitha had 80 currency notes in all, some of which are of Rs 95 denomination and the remaining of Rs 45 denomination. The total amount of all these currency notes was Rs. 4000. How much amount (in Rs) did she have in the denomination of Rs 45? |
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How many pieces of 0.85 metres can be cut from a rod 42.5 metres long? |
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The ratio between two numbers is 4:5 and their sum is 540. The greater of the two numbers is? |
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How many times do the hands of a clock coincide in a day? |
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A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min.48 sec fast at 2 p.m. on the following Monday. When was it correct? |
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The ratio between the speeds of the A& B is 2:3 an therefore A takes 10 min more |
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The length of a rectangle is twice its breadth. If its length is decreased by 5 cm and breadth is increased by 5 cm, the area of the rectangle is increased by 75 sq.cm. What is the length of the rectangle? |
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The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is: |
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The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area? |
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