View All num of num See all Photos J.P. Morgan This employer has taken extra steps to respond to reviews and provide job seekers with accurate company information, photos, and reviews. Interested for your company?Learn More. www.jpmorganchase.com Engaged on Glassdoor Overview Reviews Salaries Interviews Jobs Photos Benefits 4.9k Reviews 14k Salaries 2.7k Interviews 5.1k Jobs Follow Add Review or Salary Follow Add Review or Salary Interview Question Intern Interview J.P. Morgan If you have two sand glass timers, one with 7 minutes worth of sand and another with 4 minutes worth of sand, how do you use both to precisely time 12 minutes? Tags: See more , See less 8 Answer Add Tags Answer Interview Answer 3 Answers ▲ 4 ▼ flip the one with 4 minutes three times. MW on 7 Feb 2012 ▲ 6 ▼ Flip the seven and four at the same time, once the four minute runs out flip the seven minute back over because it will have four minutes till it runs out again. Once that runs out, flip over the four minute sand glass again, and after that run out, twelve minutes is up SF on 28 Apr 2012 ▲ 1 ▼ start the 7 min and 4 min sandbox the same time, and filp the 4 min sandbox when its done, and flip the 4 min sandbox again when the 7 min sandbox is done, so now you have 1 min in the 4 min sandbox, then you 1 + 4 + 7 = 12 TC on 13 Sep 2012 Add Answers or Comments To comment on this, Sign In or Sign Up.