Question

2. A line segment of length 10 cm was wrongly measured as 5 cm. What was
the error per cent?
3. After an increase of 15%, the salary of a person becomes Rs.51,750/- What
was his original salary?

Answer 1

Answer:

Let

Intial salary = x

In increased by = 15%

Salary now Rs 9936

Then

x + 15/100*x = 9936

x + 3/20*x = 9936

20x + 3x/20 = 9936

23x = 198720

X = 8640

Answer 2

1) The total length of line segment= 10cm.

wrong measurement taken= 5cm.

10/5= 2.

so, only half length was measured.

10= 100%.

5= 100÷2= 50%.

For second ans, please reffer to the attachment.

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