Solutions:
Ans. 1. (C) Rs 2200
Ans. 3 (A) 20% increase
Let the number of the articles sold before the price rise be x at a price of Rs y per article.Sale before the price rise =Rs xy
Sale after the price rise
Ans. 4 (B) Rs 480
Ans. 5 (A) Rs 60
Ans.6 (C) 45: 56
Ans.7 (C) 13
Ans.8 (B) 30
Ans.9 (B) 400
Ans.10 (D) 750
Hint: Let the price of the horse be Rs X.
Ans.11 (D) 40 paise
Ans.12 (B) 100%
Hint: C.P. of X = Rs 400, C.P. of Y = Rs 75,
C.P. of Z =Rs 150.
C.P. of Z =Rs 150.