Question

The value of a machine depreciates 10% every year if its present value rupees 387000 what was it value 1 year ago

Answer 1

$\Huge\underline{\underline{\sf Solution}}$

Let ,

Value of machine an year ago = x

So,

Its 10% will be $\implies{\sf x×\frac{10}{100} }$

$\implies{\sf \frac{x}{10}}$

$\large\underline{\underline{\sf According\:to\: Question:}}$

$\large\implies{\sf x-\frac{x}{10}=387000}$

$\large\implies{\sf 9x=3870000}$

$\large\implies{\sf x=\frac{3870000}{9}}$

$\large\implies{\sf x=430000}$

Hence,

$\large\underline{\underline{\sf Its\:value\:1\:year\:ago\:is\:Rs430000}}$

Answer 2

solution:

Let, value of machine before one year be x....

so, its 10% = × /10

according to the question:

x - x/10= 387000

(10x-x)/10= 387000

9x/10= 387000

9x= 387000×10

9x= 3870000

x= 3870000/9

x = 430,000......

Hence, the value of the machine before one year is Rs.430,000....

Hope it helps you....☺️☺️