The histogram shows information about the mass of several parcels in a delivery van.

Work out an estimate for the proportion of parcels with a mass over 27.5kg.
Explain why your answer to part a is only an estimate.
Practise Eduqas GCSE Maths Histograms with exam-style questions for Foundation and Higher tier. 28 questions, matched to the Eduqas GCSE Maths (C300QS) specification and written in Component 1 and Component 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.