Question

4. the cost of 5 pencils is equal to the selling price of 4 pencils. Find the gain per cent.
5. the selling price of 11 laptops is equal to the cost price of 10 laptops. What is the loss
percent?​

Answer 1

Answer:

Step-by-step explanation:

4.Gain = 5 - 4 /4  x 100 = 1/4 x100 = 25  %

Its a trick .

Now explanation,

Let the cp of 5 obj . be x .

cp of 1 obj. = x/5

now

sp of 4 obj = x

sp of 1 obj = x/4

Gain = x/4 - x/5 = x/20

Gain % = x/20 x 5/x × 100  = 25%

5.in the picture

hope it helps

Answer 2

Answer:

1st ans is 25%

2nd ans is 100/11%