IS Curve Equation Application Two

Suppose that initially . Then there is a demand shock to consumption where and the Then short-run output will rise by 1%
    See page 246-247 (of Jones Macro Econ)

Starting a bit into the IS curve calculation, we know that

Plugging in our given numbers (and I suppose assuming that consumption increasing by 5% is to mean that   increases by 5%)

The short-run economy will rise by 1%.