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Step-3

Title: Ratios

Grade: 8-a Lesson: S2-L2

Explanation: Let us verify the answer here with the steps.

Description:

Step	Type	Explanation	Answer
1	Problem	The cost of a pen is $4, and the cost of a pencil is $2.50. Find the ratio of the cost of a pen to a pencil.
2	Hint	Operator used : Ratio	:
3	Step	Cost of a pen	\$$4\$
4	Step	Cost of a pencil	\$$2.50\$
5	Step	Ratio of the cost of a pen to a pencil	\$4:2.50\$
6		=	\$400:250\$ \$\cancel(400)^8\$ : \$\cancel(250)^5\$
7		=	\$8:5\$
8	Step	Hence, the ratio of the cost of a pen to a pencil	8:5

Step

Type

Explanation

Answer

Problem

The cost of a pen is $4, and the cost of a pencil is $2.50. Find the ratio of the cost of a pen to a pencil.

Hint

Operator used : Ratio

Step

Cost of a pen

\$$4\$

Step

Cost of a pencil

\$$2.50\$

Step

Ratio of the cost of a pen to a pencil

\$4:2.50\$

\$400:250\$
\$\cancel(400)^8\$ : \$\cancel(250)^5\$

\$8:5\$

Step

Hence, the ratio of the cost of a pen to a pencil

8:5