Question

if x and y are two elements belonging to groups IV and V of mendeleev's periodic table then formula for oxide of X and hydride of Y would be :-​

Answer 1

Answer:

A shopkeeper bought 50 English books at the cost of rupees 2000 per 25 books and 75 Mathematics books at the cost of rupees 1500 per 15 books. Find:

(a) The cost price of the English books.

(b) The cost price of the Mathematics books.

(c) The cost price of all English and Mathematics books.

(d) If he sold the English books at rupees 95 per book, find his profit in English books.

(e) If he sold the Mathematics books at rupees 95 per book, find his profit or loss in Mathematics books.