Question 1148486
{{{ I = P*r*t }}}
{{{ P + I = 1150 }}}
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{{{ 950 + I = 1150 }}}
{{{ I = 1150 - 950 }}}
{{{ I = 200 }}}
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{{{ I = P*r*t }}}
{{{ 200 = 950*r*(1/2) }}}
I assume it's annual interest, so I used {{{ t = 1/2 }}}
which is 6 months
{{{ 400 = 950r }}}
{{{ r = .4211 }}}
42.11%
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