97) Joe has a collection of nickels and dimes that is worth $4.50. If the number of dimes were doubledand the number of nickels were increased by 13, the value of the coins would be $7.15. How manydimes does he have?
97)98) Helen Weller invested $15,000 in an account that pays 10% simple interest. How much additionalmoney must be invested in an account that pays 13% simple interest so that the total interest isequal to the interest on the two investments at the rate of 11%?
98)99) A merchant has coffee worth $20 a pound that she wishes to mix with 80 pounds of coffee worth $60 a pound to get a mixture that can be sold for $30 a pound. How many pounds of the $20 coffeeshould be used?
99)100) Candy and Delvis are riding bicycles in the same direction. Candy is traveling at the speed of 4miles per hour, and Delvis is traveling at the speed of 6 miles per hour. In 4 hours what is thedistance between them?A) 8 milesB) 9 milesC) 17 milesD) 5 miles