For this, we need to make ratios(unit per unit, in this case, red paint per white paint).
Sydney's Mix -

Maria's Mix -

Both of these fractions are improper, so you can make mixed fractions and then find their common denominators:
Sydney's Mix - 1
= 1

Maria's Mix - 1
= 1

Therefore, they do not have the same shade of pink because 1
1
:)