Question

1. which list contains a multiple of both 3 and 5?

a) 21, 25, 30
b) 3, 10, 15
c) 15, 30, 45
d) 12, 15, 30

1. at thanksgiving dinner, mrs. brown ate 3 pieces of pumpkin pie. ms. wiz ate 4 times as many pieces of pumpkin pie. how many pieces of pumpkin pie did both teachers eat?

b
w
3+4 = 12
mrs. wiz had 12 pumpkin pic

1. ilse has 10,483 pokemon cards. ilse has 1,897 more cards than riley. how many pokemon cards does riley have?
2. there are 1,462 students at the middle school. there are 587 sixth graders and 438 seventh graders. the rest of the students are eighth graders. how many students are in eighth grade? (hint: its more than one step)
3. circle the correct answer choice for both questions below:

what kind of triangle is this?
what kind of triangle is this?
acute right obtuse
acute right obtuse

Explanation:

Step1: <Identify the problem>

We need to find which list contains a multiple of both 3 and 5.

Step2: <Check each option>

• Option A: 21 is divisible by 3 ($21\div3 = 7$), but 21 is not divisible by 5 ($21\div5=4.2$). 25 is divisible by 5 ($25\div5 = 5$), but not by 3 ($25\div3\approx8.33$). 30 is divisible by 3 ($30\div3 = 10$) and 5 ($30\div5 = 6$).
• Option B: 3 is divisible by 3 ($3\div3 = 1$), but not by 5 ($3\div5 = 0.6$). 10 is divisible by 5 ($10\div5 = 2$), but not by 3 ($10\div3\approx3.33$). 15 is divisible by 3 ($15\div3 = 5$) and 5 ($15\div5 = 3$).
• Option C: 15 is divisible by 3 ($15\div3 = 5$) and 5 ($15\div5 = 3$). 30 is divisible by 3 ($30\div3 = 10$) and 5 ($30\div5 = 6$). 45 is divisible by 3 ($45\div3 = 15$) and 5 ($45\div5 = 9$).
• Option D: 12 is divisible by 3 ($12\div3 = 4$), but not by 5 ($12\div5 = 2.4$). 19 is not divisible by 3 ($19\div3\approx6.33$) or 5 ($19\div5 = 3.8$). 30 is divisible by 3 ($30\div3 = 10$) and 5 ($30\div5 = 6$).

Since option C has all numbers (15, 30, 45) that are multiples of both 3 and 5.

Answer:

C. 15, 30, 45