SOLUTION: Hello again, can you help me to solve my problem in school #1 - Peter spent P5.35 on stamps, in denominations of 15 centavo, 20 centavo and 25 centavo. He bought one-half as man

Question 351575: Hello again, can you help me to solve my problem in school
#1 - Peter spent P5.35 on stamps, in denominations of 15 centavo, 20 centavo and 25 centavo. He bought one-half as many 25 centavo stamps as 15 centavo and three more 20 centavo stamps than 15 centavo stamps. How many of each type did he buy?
#2 - Calvin Klein has twice as many 10 centavo coins as 25 centavo coins amounting to P6.75 in all. How many coins does he have
#3 - How much pure acid should be mixed with 2 gallons of a 40% acid solution in order to get a 70% acid solution?
#4 - How many ounces of pure silver should be added to 80 ounces 75% pure to obtain a mixture of 80%?
#5 - How many quarts of pure alcohol must be added to 10 quarts of 10% alcohol solution to obtain a mixture which is 25% alcohol?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
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