Dorothy type 120 minute. how many word does dorothy type in 1.75 minute

She typed 210 words in that time frame

To be clear I understand:

Dorothy types 120 words per minute.

let's say that her rate per minute = x

x*1 = 120//divide by 1:

x=120

for 1.75 we have the following equation:

x*1.75=y

where we have to find y.

we know that x=120

so we have:

120*1.75=y

120 * (1+0.75) = y / / (0.75 of 120 is 90. We can find it by diving 120 by 4 (30) and multiplying by 3 (3*30=90)).

120+90=y

210=y

so she can type 210 words per 1.75 minutes.

Let me know if youy have further questions!