SAT Math: Solving Multiple Equations to Find Jewelry Options

Elizabeth, a jeweler, makes two types of rings. One type of ring, the Goldenrod, is made from 2 grams of platinum and 6 grams of gold. Another ring, the Oracle, is made from 8 grams of platinum and 1 gram of gold. Her supply shipment for the next week has 80 grams of platinum and 79 grams of gold. If she uses all of her supplies to make a total of 19 rings, how many of those rings would be Oracles?

Heart of AlgebraSystems of linear equations in two variables (word problems)
Product TypeSAT Math
SAT MathAlgebra and Functions
Heart of Algebra
Test PrepSAT Math