Arianna has a coin collection. She keeps 4 of the coins in her box, which is 10% of the collection. How many total coins are in her collection?

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?

An engineer scale model shows a building that is 3 inches tall. if the scale is 1 inch = 600 feet, how tall is the actual building?