Phoebe's pays 2.8 pence per minute to use her phone. On average Phoebe uses her phone for 77 minutes per day. She pays her phone bill for 29 days.
Work out an estimate for how much Phoebe pays.
Is your answer to part (a) an underestimate or an overestimate? Give a reason for your answer.
Practise Edexcel IGCSE Maths Estimating with exam-style questions for IGCSE Maths. 15 questions, matched to the Edexcel IGCSE Maths (4MA1) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.