4MA0 Foundation June 2015 Paper 1 Q11

EdexcelFoundationOld spec4 marksSolving Simple EquationsSubstitution

11 This rule gives the cost, in euros, of hiring a bicycle for a number of days.

Cost in euros  =  8  ×  (number of days)  +  15

Marina hires a bicycle for 4 days.

(a) Work out the cost in euros. (2)

Cyril hires a bicycle for a number of days.
The cost is 71 euros.

(b) Work out the number of days (2)