A piece of string is 500 cm long.
John cuts four 45 cm lengths off the string.
He then cuts the rest into as many 35 cm lengths as possible.
Work out, giving your answer as an exact integer, how many 35 cm lengths of string John cuts.
218 exam-style questions on CCEA GCSE Maths Calculation Problems. Each one has a worked solution and a mark scheme showing where the marks go.