Currently, the sum of the ages of yumi, rana and victoria is 42 years. four years ago, the sum of the ages of rana and victoria was equal to the current age of yumi. what is yumi's current age?

Someone me what is the area of this figure? 18m 18m 8m 16m

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?

Heather is a cashier. she can ring up 1212 customers in 99 minutes. at this rate, how many minutes does it take her to ring up 44 customers?