`80% "of" 450+20% "of" 850=?`

Find 20% of 450

Write t for ture and false for each of the following: (1) 3/4 as rate per cent is 75% (2) 12.1/2% experesseed as afraction is 1/8 (3) 2:5=25% (4) 80% of 450 =360. (5) 20% of 1liter =200ml

A mixture of 80% of copper and 20% of tin makes an alloy. Give explanation for this statement.

What happens when 80% of copper and 20% of zinc combine together?

State whether the statement is true or false- The alloy which is made up of 80% of copper and 20% of tin is called as gun metal.

If 20% of a is equal to 80% of b then a+b:a is equal to

A compound contains 80% of carbon and 20% hydrogen. If the molecular mass is 30 calculate empirical formula and molecular formula.

Explain- An alloy which is made of 20% of zinc and 80% of copper metal is used to make electrical devices.

Nitrogen with mass number 13 and atomic number 7 decays to carbon having Z = 6. (a) Write an equation for this decay. (b) How much time it will take to convert the mixture of nitrogen 80% and carbon 20% to a mixture of nitrogen 20% and carbon 80%. The half-life for this decay is 30 minutes.