please slove this .

**There are four beakers B1, B2, B3 and B4 with 2%, 4%, 6% and 8% milk solutions respectively. From each of the four beakers, some amount of mixture is taken out and poured into an empty beaker B5. B5 now has a solution of 5% milk. Read the two statements given below and mark the correct answer. **

**I. Amounts of mixtures taken from B1 and B4 are not equal.**

** II. Amounts of mixtures taken from B2 and B3 are equal. **

the cost of production of a 50 kg bag of cement is rs. 90 and it sold of rs 120. the govt. imposes a tax of 10% on the cost of production. if the govt. changes its policy and levises the 10% tax on the selling price instead of cost price , by what percent does the profit decrease?( assume selling price is unchanged)

Q) If the sum of first n terms of A.P is P*n+Q*n^2 , where P and Q are constants, then common difference of A.P will Be..

Ans> 2Q (How?)

Simple Alligation and Mixture question. Amount with A is Rs.750.

Will post only Arithmetic Questions in this thread..Here is the 1st one

can someone give the way to solve please?