Answer:
$16.64
Step-by-step explanation:
$16 + 4% = $16.64
The answer is 28. My answer is correct. 7, 14& 21 can't be the LCM son the answer should be 28.
If the ratio is 3:5, then for every 3 boys there are 5 girls, so you multiply 3 and 5 by 24 and you get your answer.