This is a risky thing to do !
Only medication that has specifically prescribed for the child by a doctor should be given.
The deviation from this course can be lethal.
250 what? You're question makes no sense. However ... 250 pounds = 250 pounds 250 ounces = 16.625 pounds 250 kilograms = 551.156 pounds 250 grams = 0.551 pounds 250 tonne = 551,155.655 pounds
250 pounds is about 113.4kg
It looks like the 3.5 ml may be extraneous information. If 1 ml yields 250 mg, then you need 400/250 = 1.6 ml, to get 400 mg.
250 kg = 551 pounds.
250 pounds = 113.4 kilograms.
250 pounds is about 113.39kg
250 pounds is 113.4 kilograms.
250 pounds = $458 approx.
250 pounds + 5% + 5 pounds = 250 pounds * 1.05 + 5 pounds = 262.5 pounds + 5 pounds = 267.5 pounds
250 pounds = 113,398.1 grams
250 pounds is about 18 stone.
250 Inch-Pounds = 20.833333 Foot-Pounds