I think it is:
1 cup = 26 grams of protein
s cups = 26 x s
26s
30, you could just multiply both numbers, but it's also better to list out the factor until both match
$23.63 just multiply 3.4 by $6.95
4/9, is your answer.
Both numerator and denominator can go into 5.
20 divided by 5 is 4, 45 divide by 5 is 9.