Irene needs a total of $250 to buy a bicycle. She has already saved $70. If she saves $10 a week from her earnings, what is the least number of weeks she must work to have enough
money to buy the bicycle?

18 weeks

Step-by-step explanation:

250 - 70 = 180

180/10 = 18 weeks

1/3

step-by-step explanation:

to find this, you can divide 12 by 4 which is 3 or you can multiply 4 until you reach 12 (4x3=12). both should give you 3, meaning theres three times less bananas than there are oranges.

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour