exam Maths Puzzle Numerical Ability

One number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Find the larger number.
5
7
17
34

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exam Other Question

Solve hte indicated system of equations by graphing. Interpert your graph and indicate the solution.

3x - y = 9

2x + y = 11

For part of it I have: 5x = 20 x = 4 The credit remaining on a phone card (in dollars) is a linear function of the total calling time made with the card (in minutes), as shown in the figure below. The remaining credit