Daily dose prescribed: 150 mg

This has to be taken in the morning, midday, and bedtime.

Tablets available: 25 mg

(D / H) x Q = a
Show full working out using this equation.

How many tablets would need to be administered at midday? Show full working out.

D / H x Q = a

150 / 25 x Q = 6
Q = 6
Therefore, 6 tablets would need to be administered at midday.

What do the letters in (D / H) x Q = a stand for?