Question

Rachel has a beaker filled with 100 mL of

water. The beaker and water together have a mass of 250 grams. What is the mass of the beaker alone? (Hint: 1 mL water-1 gram).
a. 100 g
b. 150 g
c. 50 g
d. 200 g

Answer 1

250-100
The whole is 250=100+x
X=mass of beaker
Do inverse operation(opposite of adding is subtracting)
So it’s 250-100=y
Y=150
Answer is B