Increase 10kg by 20%​

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet