#Lets just write x as the nunber you asked
x × 40/100 = 18
x = 18 : 40/100
x = 18 × 100/40
y = 1800/40
y = 45
Answer:
45
Step-by-step explanation:
take the unknown number as z
40%=40/100
40/100×z=18
2/5×z=18. (40/100=2/5)
z=18/2×5
z=45
Hope you've understood
