ricks chore list shows that he is responsible for washing the dishes after dinner this week. last night, he…
ricks chore list shows that he is responsible for washing the dishes after dinner this week. last night, he washed 4 plates in 2 minutes. tonight, his grandparents are coming to dinner, and rick will wash 6 plates. if he washes plates at the same rate, how many minutes will it take rick to wash the plates tonight? minutes
Answer
Explanation:
Step1: Calculate the rate of washing plates
The rate $r$ is the number of plates washed per minute. He washed 4 plates in 2 minutes, so $r=\frac{4}{2}= 2$ plates per minute.
Step2: Calculate the time to wash 6 plates
Let $t$ be the time. We know that rate $r = 2$ plates per minute and the number of plates $n = 6$. Using the formula $t=\frac{n}{r}$, we substitute $n = 6$ and $r=2$ into it, so $t=\frac{6}{2}=3$ minutes.
Answer:
3