Question

4. Tia has 15 metamorphic, 8 igneous,

and 7 sedimentary rocks. She displays
her rocks equally in 2 cases. Which
shows how she found the number of
rocks to put in each case? (10-8)
A 2×16
B 16 2
C 2 × 30
D 30 2

Just stole this from my brothers book cause he asked me for help and I was lazy.

Answer 1

The answer is D) 30 ÷ 2 = 15.

Tia has a total of 15 + 8 + 7 = 30 rocks. She wants to display them equally in two cases, so she needs to divide the total number of rocks by 2:

30 ÷ 2 = 15

Therefore, Tia should put 15 rocks in each case.