Question

the cost of an article goes down every year by 25% of its previous value.find original cost if the cost of it after 2 years is 25,200​

Answer 1

AnswEr :

• Let the Original Cost be Rs.x
• Decrease = (100 - 25)% = 75%

A.T.Q

➟ x × 75% × 75% = 25200

➟ x × $\large\tt{\frac{75}{100}}$ × $\large\tt{\frac{75}{100}}$ = 25200

➟ x × $\large\tt{\frac{3}{4}}$ × $\large\tt{\frac{3}{4}}$ = 25200

➟ x × $\large\tt{\frac{1}{4}}$ × $\large\tt{\frac{1}{4}}$ = 2800

➟ x = 2800 × 16

➟ x = Rs. 44,800