In one bottle there are 237 ml. if in every 20 ml there are 30 mg of a substance, then how many milligrams are there in total.

There are 355.5 milligrams of substance there in one bottle

Step-by-step explanation:

Given as :

One bottle = 237 ml

For every 20 ml .  there are 30 mg of substance

∵ For every 20 ml  there are 30 mg of substance

Then , For  1 ml  there are mg of substance

∴        For, 237 ml there are × 237 mg of substance

Or,      For, 237 ml there are 355.5 mg of substance

Hence There are 355.5 milligrams of substance there in one bottle Answer