Percentage Problem( Week 40 Practice)
1. Jay and his brother collected Pokemon cards. The number of the cards Jay collected is 20% of the number of the cards his brother has. If Jay has 28 cards, how many cards does his brother have? 2. A shirt was charged $1.32 with a 4% sales tax rate included. What was the cost of the shirt(in dollars)before the tax was included? 3. The tickets for a concert cost $20 each. However, children can get a 10% discount. A group of 11 people consisting of children and adults paid a total of $210 for the concert. How many children were there in the group? 4. 5 pounds of alcohol and 15 pounds of pure water are mixed to make an alcohol solution. What is the alcohol percentage by weight in the solution?