Question

On Friday, Janice read x pages every 30 minutes
for 4 hours, and Kim read y pages every 15
minutes for 5 hours. Which of the following
represents the total number of pages read by
Janice and Kim on Friday?
A) 4x + 5y
B) 8x + 20y
C) 20x + 8y
D) 120x + 75y

Can anyone explain this to me with an answer

Answer 1

Answer:

B

Explanation:

60÷30=2

2*4=8

8x

60÷15=4

4*5=20

20y

8x+20y

Answer 2

An expression is defined as a set of numbers, variables, and mathematical operations. The correct option is B.

What is an Expression?

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

Given On Friday, Janice read x pages every 30 minutes for 4 hours, and Kim read y pages every 15 minutes for 5 hours. Therefore, the expression that represents the total number of pages read by Janice and Kim on Friday is,

$(\dfrac{4 \times 60}{30})x +(\dfrac{5 \times 60}{15})y\\\\= 8x + 20y$

Hence, the correct option is B.

Learn more about Expression:

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