Question 669400
.05n + .1d = 5.65
.05(n+8) + .1(2d) = 10.45
...
.05n + .1d = 5.65
.05n + .4 + .2d = 10.45
...
.05n + .1d = 5.65
.05n + .2d = 10.05
...
Multiply the first equation by -1 and add to the second
-.05n + .05n + -.1d + .2d = -5.65 + 10.05
.1d = 4.4
{{{highlight_green(d = 44)}}}
.....................
Delighted to help.
-Reading Boosters
Wanting for others what we want for ourselves.
www.MyHomeworkAnswers.com