Question

An adult takes tablets containing 24 milligrams of zinc. If the amount is 160% of the recommended daily allowance, how many milligrams are recommended?

Answer 1

You would need to set of a ratio/proportion.

160/100 =24/x

you can reduce and make it to 8/5 = 24/x

the cross multiply 8x = 5(24)

so now it becomes 8x = 120

then we get the variable by itself by dividing by 8 on both sides, x = 120/8

so x=15, meaning 15 milligrams are recommended

Answer 2

The dose is decreased to 30-50 mg per day after an adequate response. For vitamin B6 deficiency: In most adults, the typical dose is 2.5-25 mg daily for three weeks then 1.5-2.5 mg per day thereafter