Question

The ratio of the earning of Ravi to Nikhil is 4:5. If Ravi rarns ₹ 9000 per month, find the earning of Nikhil.

Answer 1

Earning of Ravi = x
Earning of Nikhil = y

According to question
x / y = 4 / 5
x = 4y / 5

Also given that x = ₹9000

Therefore
₹9000 = 4y / 5
y = (₹9000 × 5) / 4
y = ₹11250

Earning of Nikhil is ₹11250 per month

Answer 2

Profit & Loss


Q. 1. What profit/loss percent did Ravi earn if he purchased an item of Rs.5,600 and sold it at three-fourth of its cost price?

      (a) Loss of 20 percent

      (b) Gain of 25 percent

      (c) Neither gain or loss

      (d) Loss of 15 percent

      (e) None of these


Ans: (e) None of these


Explanation: Q.1.

 C.P. = Rs.5600

 S.P. = Rs.5600x ¾ = Rs.4200

 Loss = Rs.5600-4200 = Rs.1400

 Loss percentage = 1400x100/5600 = 25%.Ans.


Q.2. The owner of a cell phone shop charges his customer 23% more than the cost price. If a customer paid Rs.7,011 for a cell phone, then what was the cost price of the cell phone?

      (a) Rs.5,845

      (b) Rs.6,750

      (c) Rs.5,900

      (d) Rs.6,925

      (e) None of these


Ans: (e) None of these


Explanation: Q.2.

 123% of CP =SP

 Therefore, CP = Rs.7,011x100/123 = Rs.5700. Ans.


Q.3. The cost price of 16 articles is the same as the selling price of 12 articles. Find the loss/profit percentages.

(a) 30%   (b) 32.50%  (c) 331/3%  (d) 40% (e)None of these