Question

ben had twice as many nickels as dimes altogether ben had $4.20 write a system of equations that would determine the number of nickels that been has

Answer 1

Convert all to cents and it would be for every 10€ or every dime there was 10€ or two nickles so that means half of 4.20 was nickles

Answer 2

Ben has 21 dimes and 42 nickels.