GMAT Practice Test 12

10 free GMAT practice questions in the real exam format, covering the official content areas, with an explanation for every answer.

GMAT Practice Test 12Tutor mode

Question 1 of 10

Quantitative Reasoning

The equation $x^{2} + b x + 36 = 0$ has two roots, one of which is 4 times the other. If $b > 0$ , what is the value of $b$ ?