60. Chemical mixtur different solutions with concentrations of 20%, 30%, and 45% glucose to obtain 10 L of a 38% glucose solution. If the amount of 30% solution used is 1 L more than twice the amount of 20% solution used, find the amount of each solution Mixes three er uch MA used. cost he ice ing? 61. Value of gold coins: As part of a promotion, a local bank invites its customers to view a large sack full of $5, $10, and $20 gold pieces. promising to give the sack to the first person able to state the number of coins for each denomination. Customers are told there are 67. 68. 69. exactly 250 coins, with a total face value of $1875. If there are also seven times as many $5 gold pieces as $20 gold pieces, how many of each denomination are there? 70. ne an 62. Rewriting a rational function: It can be shown that the rational function V(x) = ear %3D 3x + 11 3 - can be written as a sum of the 8. ution nd d of a Twice 3x + x – 3 Вх + С terms where the coefficients x + 1 Learr %3D A+ B In Secti -3B + C = 3 - 3C = 11 at is A, B, and C are solutions to O A. Find the missing coefficients and verify your answer by adding the terms. ar the year lished 63. Rewriting a rational function: It can be shown that the rational function V(x) = OB. years Rights cars * - 6x + 9x .3 can be written as a sum of the