exam Maths Puzzle Numerical Ability

The sum of 2 numbers is 36. If 3 times the smaller number is subtracted from the larger number, the result if 4.

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exam Other Question

Find the X Intercepts of the following...
y= x^2-4x+4

Thanks
r=2 s=5 t=.5

Write the following algebraic expression.
Then evaluate the expression for the values given above.

t times the sum of four times s and r