Problems deals, token, proportions and percentages.
1 - Ana buy 5 kg of potatoes, if 2 kg cost € 0.80, how much pay Ana?
2 - 3 workers built a wall in 12 hours, how long will it take 6 workers to build it?
3 - 11 workers tilling a rectangular field 220 m long and 48 wide in 6 days. How many workers will be needed to carve another similar field of 300 m long and 56 m wide in five days?
4 - Six taps, take 10 hours to fill a tank of 400 m³ of capacity. How many hours does it take four taps to fill 2 tanks of 500 m³ each?
5 - The price of a computer is 1200 € excluding VAT. How much to pay for it if the VAT is 16%?
6 - When buying a monitor that costs 450 € do us a discount of 8%. How much do we pay?
7 - three individuals were associated with providing 5000, 7500 and 9000 €. After a year they have won € 6 450. How much for each one if they make a deal directly proportional to the capital contributed?
8 - All get a lot of money, three people, directly proportional to 3, 5 and 7. Knowing that the second is that € 735. Find what belongs to the first and third.
9 - Deal € 420, including three children in parts inversely proportional to their ages, who are 3, 5 and 6.
10 - What decimal number corresponding to each of these percentages? 33% 7% 5.4% 145% .
11 - Calculate 7% of 5 420.
12 - Calculate the percentage that represents 78 of 125.
If you need answers to the proposals, ask your teacher or written comments to place the responses on this issue or other issue that has been published. Luck !!!!!!!!!!
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