Now: 21 years old. In 8 years, age will be half of what number?

Rectangle 8×9 with 1-unit border. Inner rectangle area?

Item A: $14, Item B: $21. 10% off entire purchase. Final price?

Rectangle 8×6 with 1-unit border. Inner rectangle area?

Item A: $5, Item B: $24. 10% off entire purchase. Final price?

Now: 28 years old. In 5 years, age will be half of what number?

Now: 20 years old. In 6 years, age will be half of what number?

Rectangle 6×8 with 1-unit border. Inner rectangle area?

Rectangle 10×7 with 1-unit border. Inner rectangle area?

Now: 27 years old. In 6 years, age will be half of what number?