Equal volumes of 10% solution (by wt) of the solute A and 15 % solution (by wt) of the solute B are mixed. The mass percent of A and B in the mixture would be respectively

Options

A. 5 and 7.5
B. 10 and 25
C. 5 and 10
D. 20 and 30

Answer

A

Explanation

As equal volume of two solution are mixed the final volume i.e. the volume of mixture would be doubled. Hence each % will become half.