In a university, 80 percent of the students lived in hostel, and 60 percent of the hostel students are lucky to get a single room. If number of lucky students is 1200, then how many students were there in the university?

2500

2400

2000

1500

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উত্তর: 2500

Let, total No. of students = x No. of students lived in hostel = x × 80% = 0.8x No.of Lucky students = 0.8x × 60% = 0.8x × 0.6 = 0.48x According to question, 0.48x = 1200 x = (1200 ×100)/048 x = 2500

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বিস্তারিত সমাধান

In a university, 80 percent of the students lived in hostel, and 60 percent of the hostel students are lucky to get a single room. If number of lucky students is 1200, then how many students were there in the university?

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সম্পর্কিত অন্যান্য প্রশ্ন

If u> t, r> q , s>t, t>r, which of the following must be true?

The price of a certain television set is discounted by 10 percent, and the reduced price is then discounted by 10 percent. The series of successive discount is equivalent to a single discount of -

A pen was sold at 15% loss. If the selling price was Tk. 8 more, than the seller could have made a profit of 10%. What was the purchase price of pen?

Ms. Lyla wants to put up fencing around three sides of her rectangular garden and have a side of 20 meter unfenced. If the yard has an area of 680 square meters, how many yards of fencing does she need?

The difference between two numbers is 7 and their product is 60, then one of the two numbers must be -

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In a sugar-water solution, the ratio of water to sugar is 8:3. If you add 2 Kgs of sugar, the ratio become 2:1. What was the amount of sugar in the original solution?

If the area of rectangle R with length 4 feet is equal to the area of square S, which has a perimeter of 24 feet , then the perimeter of rectangle R equals -

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If N and P are both odd numbers, which of the following numbers must be an even number?