Homothetic production function and growth question

[Nupur]

Please help in all the parts! Don't do in detail but any sort of hint is most welcome!

[Dreyfus]

I m getting 5.5% for part a
I used the fact that Lw=Kr , w=MPL, r= MPk, also since production func is homogeneous of degree 1 therefore by Euler'stheorem Y=L*MPL + KMPK
I used all this information to compute part a by applying logarithm to production function!