If ‘@’ means ‘×’, ‘$’ means ‘+’, '*' means '÷' and ‘&’ means ‘–’, then evaluate: 14 @ 9 * 3 & 3 $ 34= ?
73
Replace each symbol with the operation it stands for: @ → ×, * → ÷, & → –, $ → +.
The expression becomes 14 × 9 ÷ 3 – 3 + 34.
Apply BODMAS: multiplication and division first, from left to right.
14 × 9 = 126, and 126 ÷ 3 = 42.
Now do addition and subtraction from left to right: 42 – 3 = 39, and 39 + 34 = 73.
Check: 14 × 3 = 42 (since 9 ÷ 3 = 3), and 42 + 34 – 3 = 73.
Hence, 73.
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A man is engaged for planting trees for 10 hours. He plants 10 trees in an hour. He takes rest for 30 minutes after every hour. How many trees does he plant in 10 hours?
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