Aman invests a certain amount of money at 2% interest and $800 more than that amount in another account at 4% interest. at the end of one year he earned $112 in interest. how much money was invested in each account?
which of the following equations could be used to solve the problem?
a.)0.02x + 0.04(800) = 112
b.)0.02x + 0.04(x + 800) = 112
c.)0.04x + 0.02(x + 800) = 112

A.) 0.02x + 0.04(800) = 112

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in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

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