...A = B — C = A+B+ C = 37° 24' 58" 51° 37' 52" 90° 57' 10" 180° 0' 0". TEACHERS EDITION. V. 1. In how many years will a sum of money double itself at 4 per cent, interest being compounded semiannually ? Let the sum be S. Then the amount at the end of...

...plane triangle given the three sides, a = 48.76, b = 62.92, с = 80.24. V. (Barnard, June, 1889.) 1. In how many years will a sum of money double itself at 4 per cent., interest being compounded semi-aimually ? 2. Given sin2 « = , find sin 2 a; and tan 2...

...plane triangle given the three sides, o = 48.76, b = 62.92, c = 80.24. V. (Harvard, June, 1889.) 1. In how many years will a sum of money double itself at 4 per cent., interest being compounded semi-annually ? 2. Given sin*x = — ^ — ' find sin 2x and...

...semi-annually ? The amount of $ 1 for 14 yr. at 4% is $ 1.73108. $1.73168 100 $173.16800 $173.17. Ans. 3. In how many years will a sum of money double itself at 6%. compounded annually ? By the table, in a little less than 12 yr. Ans. 4. In how many years will a sum...

...2. What will $100 amount to in 7 years with interest at 8% per annum, compounded semi-annually ? 3. In how many years will a sum of money double itself at 6%, compounded annually ? 4. In how many years will a sum of money treble itself at 6%, compounded annually...

...2. What will $100 amount to in 7 years with interest at 8% per annum, compounded semi-annually ? 3. In how many years will a sum of money double itself at 6%, compounded annually ? 4. In how many years will a sum of money treble itself at 6%, compounded annually...

...itself at 5% interest ? 2. What sum of money put at interest for 2 years at 6% amounts to $84 ? 3. In how many years will a sum of money double itself at 6 % simple interest ? 4. In how many years will $80 amount to $200, at 6% interest ? (80 + xx 6% of 80...

.../ r\«n_1 r PROBLEMS 1. Find the amount of $100 in 50 years at 5% interest, compounded annually. 2. In how many years will a sum of money double itself at 4J^ interest, compounded annually? 3. If in the year 1776 $1000 had been left to accumulate for 124...

...plane triangle given the three sides, a = 48.76, b = 62.92, с = 80.24. V. (Harvard, June, 1889.) 1. In how many years will a sum of money double itself at 4 per cent., interest being compounded send-annually ? 2. Given sin2ж= —*- — - - i find sin 2...

...\°]0 per month ? 4. What sum of money put at simple interest for 2 years at 6% amounts to $84? 5. In how many years will a sum of money double itself at 6% simple interest? 6. At what rate per cent will $1600 gain $640 in 10 years at simple interest ? 7....