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Step-3

Title: Ratios

Grade: 8-a Lesson: S2-L2

Explanation: TODO

Description:

Explanation	Answer
Problem	The cost of a pen is $4, and the price of pencils is $2.50. Find the ratio of the cost of a pen to a pencil.
Operator used	:
Step - 1	Cost of pen = $4 = \$4 \ times 100\$ = \$400\$ pennies
Step - 2	Cost of pencil = $2.50 = \$2.50 \ times 100\$ = \$250\$ pennies
Step - 3	Cost of pen : Cost of pencil = \$\cancel400^8 : \cancel250^5\$ = \$8:5\$
Step - 4	Therefore, the ratio of cost of a pen to a pencil is 8 to 5

Explanation

Answer

Problem

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

Operator used

Step - 1

Cost of pen = $4 = \$4 \ times 100\$ = \$400\$ pennies

Step - 2

Cost of pencil = $2.50 = \$2.50 \ times 100\$ = \$250\$ pennies

Step - 3

Cost of pen : Cost of pencil = \$\cancel400^8 : \cancel250^5\$ = \$8:5\$

Step - 4

Therefore, the ratio of cost of a pen to a pencil is 8 to 5