Chai invests some money. By the end of the first year, the value of the investment has decreased by 35%. By the end of the second year, the value of the investment has increased by 40% of its value at the end of the first year.
Find the overall percentage change in the value of the investment.
▶️ Answer/Explanation
Solution
Ans: -9%
1. Let initial amount be $100
2. After first year: $100 × 0.65 = $65
3. Second year increase: $65 × 0.40 = $26
4. Final amount: $65 + $26 = $91
5. Overall change: $91 – $100 = -9%
Question
Joseph spends \(\frac{5}{24}\) of one week’s earnings to buy a jacket.
The cost of the jacket is \($)56.50\) .
Calculate the amount Joseph earns in a week.
▶️ Answer/Explanation
Answer: 271.2[0]
Since 5/24 of earnings = $56.50, multiply both sides by 24/5 to find total earnings: 56.50 × (24/5) = 271.2.
