Jasmine is making cookies for everyone in her class and she wants to make sure everyone gets at least one cookie. The recipe cal
ls for ½ of a teaspoon of vanilla for every batch and each batch makes 12 cookies. If her class has a total of 36 students, how many teaspoons of vanilla will Jasmine use?
If her class has 36 students, and there are 12 cookies in every batch, then she needs 3 batches to give everyone in her class 1 cookie each. It takes 1/2 teaspoon for every recipe, so she needs 3 of those. 3 × 1/2 = 1.5 (or 3/2)
<span>It will take 20 minutes. The fridge needs to cool down by 90-50=40degrees. The fridge cools at 2 degrees per minute, i.e. 40/2=20 minutes total.</span>
