Question

If 'P' stands for 'x', 'Q' stands for '÷', 'R' stands for '-' and 'S' stands for "+', what will come in place of the question mark '?' in the following equation? (35 P 2) Q 5 S (86 Q 2) R (3 P 15) S 90 = ?

• A. 102
• B. 126
• C. 98
• D. 114

Answer 1

Answer:

A. 102

Given:

• P = ×

• Q = ÷

• R = −

• S = +

Expression:
$(35\ P\ 2)\ Q\ 5\ S\ (86\ Q\ 2)\ R\ (3\ P\ 15)\ S\ 90$
Replace symbols

$(35 × 2) ÷ 5 + (86 ÷ 2) − (3 × 15) + 90$
Solve brackets

• (35 × 2 = 70)

• (86 ÷ 2 = 43)

• (3 × 15 = 45)

Now expression becomes:
$70 ÷ 5 + 43 − 45 + 90$
Perform division first

• (70 ÷ 5 = 14)

Now:
14 + 43 − 45 + 90

Solve left to right

• (14 + 43 = 57)

• (57 − 45 = 12)

• (12 + 90 = 102)

  Final Answer: 102