The average weight for a group of 20 women is 130 pounds. If the average weight for 75% of these women was 140 pounds, what was the average weight, in pounds, for the rest of the women?

100

110

120

135

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উত্তর: 100

Total weight of 20 women = 20 x 130 = 2600 pounds Total weight of 75% of 20 = 15 women = 15 x 140 = 2100 pounds Total weight of the rest 5 women = 2600 - 2100 = 500 pounds Then, the average weight of these 5 women = 500/5 = 100 pounds.

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বিস্তারিত সমাধান

The average weight for a group of 20 women is 130 pounds. If the average weight for 75% of these women was 140 pounds, what was the average weight, in pounds, for the rest of the women?

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সম্পর্কিত অন্যান্য প্রশ্ন

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 -

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

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?

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