Isaac has 42 more cents than Oscar.
Oscar has a dime (10 cents), a nickel (5 cents), and a penny (1 cent). Isaac has two quarters (25 cents + 25 cents = 50 cents), a nickel (5 cents), and 3 pennies (3 cents).
Once you add up Oscar's total (10+5+1), you get 16 cents and Isaac's total (50+5+3) amounts to 58 cents. 58 - 16 = 42, thus, Isaac has 42 more cents than Oscar.
Hope this helps!