18) A
Let the sample size be 100
Between 75 and 85 households own a dishwasher
Between 35 and 40 households own a tumble dryer
Less than 5 households own nothing.
Maximum value = 85 + 40 – 100 = 135 – 100 = 35%
Minimum value = 75 + 35 – 100 = 110 – 100 = 10%
Hence the answer is A (10% – 35%)
