Question

If'+' means 'x', 'x' means '-', '-' means '÷', then 20 + 5 × 2 - 10 = ?

• A. 89
• B. 67
• C. 78.89
• D. 99.8

Answer 1

Answer:

D. 99.8

Given:

• + means ×

• × means −

• − means ÷

Expression:

20 + 5 × 2 − 10

Replace the symbols with their actual meanings:

20 × 5 − 2 ÷ 10

Now apply the usual order of operations:

• 20 × 5 = 100

• 2 ÷ 10 = 0.2

So:

100 − 0.2 = 99.8

Answer: 99.8