Final answer:
To calculate the original price of a phone before a 10% discount, set up an equation where 90% of the original price equals Tsh. 450,000/=. Solving for the original price, it comes to Tsh. 500,000/=.
Step-by-step explanation:
The question asks to calculate the original price of a phone before a 10% discount, given that the final price after discount is Tsh. 450,000/=. To find the original price, we can use the following steps:
- Determine the final price: The final price after the discount is Tsh. 450,000/=.
- Represent the discount: A 10% discount means the final price is 90% of the original price, so we can represent the original price as '100%' and the final price as '90%' of the original price.
- Set up the equation: Let the original price be 'x'. Therefore, 0.9x = Tsh. 450,000/=.
- Solve for the original price: Dividing both sides of the equation by 0.9 gives us x = Tsh. 450,000/= ÷ 0.9, which when calculated equals Tsh. 500,000/=.
Thus, the original price of the phone before the discount was Tsh. 500,000/=.