Question

15% of a mass is 45 g. Calculate 20% of the mass

Answer 1

15%=45
divide 3
5%=15
double
10%=30
double
20%=60


60 grams

legit way
percent/mass=15/45=1/3

1/3=20/?
times both sides by 3?
?=3*20
?=60


60g

Answer 2

What is 100% of the mass ?