Question
If 'P' means 'division', 'Q' means 'subtraction', 'R'
means 'addition', and 'S' means 'multiplication', then what is the value of the expression: {55 R (42 S 10) P (84 Q 60) }Solution
{55 R (42 S 10) P (84 Q 60) }
{55 + (42 X 10) ÷ (84 - 70) }
{55 + 420 ÷ 14}
{55 + 30} = 85.
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