Answer:
24 years
Explanation:
let Donald's age be x
then Nicole's age would be 1/2 * x = x/2
now, x + x/2 = 72
3x/2 = 72
3x = 72*2
x = 144/3 = 48
Donald's age is 48, so Nicole's age is 1/2 * 48 = 24 years.
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