How is finding a fractional number is the same as multiplying that fraction by a whole number

When I was 2 years old, my sister was half of my age. Now Im 80 years old, how old is my sister?

A bakery sold 102 cupcakes in one day. The head baker predicted he would sell 82 cupcakes that day. What was the percent error of the baker's prediction? A. 24.39% B. 19.61% C. 20% D. 80.

How do u solve - 15-6m = - 10m + 5

Julia paints 2/6 of a wall in her room white. She paints more of the wall green. Which fraction could show the part of the wall that is green?

500 tickets must be sold. 54 students have sold nine tickets each. How many tickets are left to be sold? [equation]

What is the reference angle for π/6

An ant can carry roughly 38 milligrams of weight. If there are 92 ants gathered, which is a good estimate of the total amount of weight they can carry together?

8) 2 (5-6n) : 10n - 166 how do you solve this?

The sum of two numbers is 70 and their difference is 24. Find the two numbers

Find the GCF of 27, 45, 36