Rosa can till 375 ft² of land in 15 min.
2 answers:
Answer: The correct option is (B) 25 ft²/min.
Step-by-step explanation: Given that Rosa can till 375 ft² of land in 15 min.
We are to find Rosa's tilling rate.
We will be using the UNITARY method to solve the given problem.
We have
In 15 min, the area of the land tilled by Rosa = 375 ft².
Therefore, in 1 min, the area of the land tilled by Rosa will be
That is, Rosa can till 25 ft² of land in 1 min.
Therefore, Rosa's tilling rate is 25 ft²/min.
Thus, (B) is the correct option.
You might be interested in
Answer:32,000ft^3
Step-by-step explanation:
Answer:
The probability that she gets all the red ones, given that she gets the fluorescent pink one, is P=0.0035 or 0.35%.
Step-by-step explanation:
Susan grabs four marbles at random.
We have to calculate the probabilities that he picks the 3 red ones, given that she already picked the fluorescent pink.
If it is given that the fluorescent pink is already picked, we are left with three red marbles, four green ones, two yellow ones, and four orange ones. A total of 13 marbles.
The probability that the second marble is red is 3 in 13.
The probability that the third marble is also red is 2 (the red marbles that are left) in 12 (the total amount of marbles left), as there is a picking without replacement.
The probability that the fourth marble is 1 in 11.
Then, the probability that the 3 red marbles are picked, is: