Question

1. A hotel has 120 rooms. If the number of double room is 8 more than three times the number of single rooms, how many single rooms does the hotel have?

2. A mechanic earns $5 more per hour than his helper. On a six-hour job the two men earn a total of $114. how much does each earn per hour?

Answer 1

1. let x = single rooms

x + (3x+8) = 120

2. Let x = helper, then x+5 = mechanic

6(x + x+5) = 114

Solve for x.