Answer to Question #114648 in Algebra for Tina

Question

Tom scored 50% in a test.if his actual Mark's were 15.determine the total Mark's of the test.

Answer 1

Let x be the total marks of the test. Then,

$50\%~\text{of}~ x = 15\\ \frac{50}{100}\cdot x = 15\\ x=30$

Therefore, the total marks is 30.