The Whiz Kids and the Calculators have solved a total of 78 math puzzles. The Whiz Kids solved 60% more puzzles than the Calculators. How many math puzzles has Whiz Kids solved?
If the Calculators solved x, then the Whiz Kids solved 1.6x
so, now we just have to solve
x + 1.6x = 78
x = 30
so 1.6x = 48