Answers

2014-10-14T18:12:12+08:00
Let 'x' be the first number 
    'y' be the other number
x + y = 35   -----equation 1
xy = 15    ---equation 2
from equation 1
x + y = 35
x = 35 - y ----equation 3
substitute equation 3 to equation 2
xy = 15
(35 - y)(y) = 15
35y - y² = 15
y² - 35y + 15 = 0
y = 34.566,  y = 0.434
the two values are the values for x and y say
y = 34.566,  x = 0.434
finding the sum of their reciprocals you'll have:
1/x + 1/y = 1/0.434 + 1/34.566
              = 2.333
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