Question

If '÷' means '+', '-' means 'x', '+' means '-' and, 'x' means '÷', then which of the following equations is CORRECT?

• A. 42 × 28 - 30 ÷ 48 + 45 = 45
• B. 42 × 28 - 30 ÷ 48 + 45 = 50
• C. 42 × 28 - 30 ÷ 48 + 45 = 40
• D. 42 × 28 - 30 ÷ 48 + 45 = 48

Answer 1

Answer:

D. 42 × 28 - 30 ÷ 48 + 45 = 48

Replace the symbols according to the given meanings:

• × means ÷

• − means ×

• ÷ means +

• + means −

So,

42 × 28 − 30 ÷ 48 + 45

becomes

42 ÷ 28 × 30 + 48 − 45

Now apply BODMAS:

• (42 ÷ 28 = 1.5)

• (1.5 × 30 = 45)

• (45 + 48 = 93)

• (93 − 45 = 48)

Thus,

42 × 28 − 30 ÷ 48 + 45 = 48

Correct option: 42 × 28 − 30 ÷ 48 + 45 = 48 (Option D)