is means equal
of means multiplication
lets say this number is a
so:
24 = 40% x a
40% = 40/100 = 4/10 = 2/5
So then:
24 = 2/5 x a
Multiply by 5/2 on both sides
24 x 5/2 = a
Simplify that:
12 x 5 = a
a = 60
So your final answer would be \(\boxed{\bf{60}}\)
