Respuesta :

naǫ
[tex]42 \ out \ of \ 50=\frac{42}{50}=\frac{42 \times 2}{50 \times 2}=\frac{84}{100}=\boxed{84\%}[/tex]
84%. You start out with 42/50. You need to then multiply the numerator and the denominator by 2 which will give you 84/100 which will then give you 84%.