3% of 18 rounded to the nearest tenth is 0.50.
Step 1: our output value is 18
Step 2: we represent our unknown value with x
Step 3: 18 = 100% in this equation
Step 4: x = 3%
Step 5: 18 = 100%(1) and x = 3%(2)
Step 6: by dividing equation 1 by equation 2 we have: 18/x = 100%/3%
Step 7: the reciprocal of both sides give x/18 = 3/100
Step 8: x = 0.54
So, 3% of 18 is 0.54.
To round this number to the nearest tenth we know that 4 and under round down and 5 and up round up, so the full answer is 0.50.