Question

you can type 250 characters in 60 seconds your friend can type 375 characters in 90 seconds do these ratios form a proportion

Answer 1

The typist's speed of 250 characters in 60 seconds and the friend's speed of 375 characters in 90 seconds, after simplification, are equal at 4.1667 characters per second, indicating that these ratios form a proportion.

Step-by-step explanation:

To determine if the ratios form a proportion, you compare the rates of typing characters per second for you and your friend. First, let's calculate each person's typing speed. You can type 250 characters in 60 seconds, which is 250/60 characters per second. Your friend can type 375 characters in 90 seconds, which is 375/90 characters per second.

Now, simplify both rates:

• Your typing rate: 250/60 = 4.1667 characters per second (rounded to four decimal places)
• Your friend's typing rate: 375/90 = 4.1667 characters per second (rounded to four decimal places)

Since both rates are equal when simplified, the ratios do indeed form a proportion.

Answer 2

see the explanation below

Step-by-step explanation:

you can type 250 characters in 60 seconds your friend can type 375 characters in 90 seconds do these ratios form a proportion

Given data

you can type 250 characters in 60 seconds

your typing speed = 250/60

= 4.16 characters per seconds

your friend can type 375 characters in 90 seconds

your friends typing speed is

= 375/90

= 4.16 characters per seconds

Since both typing speeds corresponds, hence the ratios are proportional