Auntie Faridah baked some kueh lapis. The number of pieces left after tea-time is 5 less than twice the number $n$ that her grandson Adam packed for school. Which expression represents the number of pieces of kueh left?
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Worked Solution
Step 1: 'Twice the number n' = 2 × n = 2n.\n
Step 2: '5 less than' means subtract 5 from that amount.\n
Step 3: So the number of kueh pieces left = 2n - 5.
Answer: 2n - 5
Correct answer: 2n - 5
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