Foundation June 2024 Paper 1 Q8

OCRFoundationCurrent spec4 marksSubstitution

8 Here is a formula.

\(a = b(c + d)\)

(a) Find the value of \(a\) when \(b = 3\), \(c = 7\) and \(d = 5\). [1]
(b) Find the value of \(c\) when \(a = 30\), \(b = 4\) and \(d = 6\). [3]