Time After 3:00 O'clock When The Hands Of The Clock Are Perpendicular Date of Exam May 2018 Subject Mathematics, Surveying and Transportation Engineering Problem How many minutes after 3:00 o’clock will the hands of the clock be perpendicular to each other for the 1st time? A. 35 C. 32.73 B. 33.15 D. 34.12 Answer Key Click here to show or hide the Answer Key Answer: [ C ] Solution Click here to expand or collapse this section $x = 15 + \dfrac{x}{12} + 15$ $\dfrac{11}{12}x = 30$ $x = 32.73 ~ \text{min}$ ← answer Category College Algebra Clock Problem 3:00 O'clock Mark Log in or register to post comments