Post a New Question

maths - challenge

posted by .

Simon starts a new job . On the first day he gets paid 1p . on the second day he gets paid 2p , and every day after that his pay doubles . how many days will it take him to earn £1,000 in a day ?

  • maths - challenge -

    a=1, and r=2
    so tn = a(r^(n-1))

    100000 = 1(2)^(n-1)
    log 100000 = log(2)^(n-1)
    n-1 = log100000/log2
    n-1 = 16.6
    n = 17.6 or appr 18 days

    on the 17th he is under,
    on the 18th day he is over.

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question