Consider the three stocks in the following table. Pt represents price at time t$,$ and Qt represents shares outstanding at time t$.$ Stock C splits two for one in the last period.

P$0$ Q$0$ P$1$ Q$1$ P$2$ Q$2$

A $901009510095100$

B $502004520045200$

C $10020011020055400$

Calculate the first$-$period rates of return on the following indexes of the three stocks $($t $=0$ to t $=1)$: $($Do not round intermediate calculations. Round your answers to $2$ decimal places.$)$

a$.$ A market$-$value$-$weighted index.

b$.$ An equally weighted index.