exam Maths Puzzle Numerical Ability

In a quadrilateral, each of two angles has a measure of 115 degrees. If the measure of a third angle is 70 degrees, what is the measure of the remaining angle? What are the steps in solving this problem?

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exam Other Question

Ellen has a total of 100 coins in her jar. the coins inside the jar are either quarters or dimes. the total amount in the jar is $22.00, how many of each type of coin is in the jar? Use Q for quarters and D for dimes. Graph x = 3
of course there is a graph but not sure how it is supposed to go help.