Question

In a school library ,the ratio of General knowledge books to Mathematics books is the same as the ratio of Mathematics books to Physics books.If there are 150 books of General knowledge and 300 books of Mathematics ,Find the number of Physics books.

Answer 1

No. of General knowledge books $=150$

No. of Mathematics books $=300$

Given,

$\frac{No.ofGeneralKnowledgebooks}{No.ofMathematicsbooks}=\frac{No.ofMathematicsbooks}{No.ofphysicsbooks}$

$\frac{150}{300}=\frac{300}{No.ofphysicsbooks}$

$No.ofphysicsbooks=\frac{300\times 300}{150}=600$