Silver Santos
Silver Santos
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Math problems?
1. The sum of the digits of a two digit number is 14. if the digits are received, the number is increased by 18. What is the number?
2. One number is 4 less than another number. The sum of the numbers is four times their difference. What are the two numbers?
3. How many kilograms of pure silver must be added to a 60% silver alloy to obtain 8 kilograms of a 57% silver alloy?
4. How many liters of a 35% acid solution should be mixed with a 14% acid solution to obtain 70 liters of a 20% acid solution?
5. Mr. Santos purchased 10,000 worth of stocks. One stock pays dividends at the rate of 4% per year. The other stock pays 6% per year. If Mr. Santos’ yearly income from the dividend is 500, how much of each stock does he own?
6. Cashing a check of 4000, Mrs. Cruz asked for the whole amount in 50 and 100 bills. She received a total of 53 bills. How many of each bill did she receive?
Only someone desperate for 10 points would take the time to do 6 of your homework problems for you. For two points, I'll set up # 1,
If "x" is one digit, the other digit is "14-x". To create a two digit number, assuming "x" is the integer in the ten's column, the number would be formed as 10*x + 14-x. Then, by reversal,
10*(14-x) + x is 18 more than the original number.