Ben bought $670 worth of correction tapes and rulers. He bought thrice as many rulers as correction tapes. He spent $230 more on rulers than on correction tapes. Each correction tape cost $1.40 more than each ruler. Find the price of a correction tape.
(a)
Total amount that the correction tapes cost
= (670 - 230) ÷ 2
= 440 ÷ 2
= $220

Total amount that the rulers cost
= 670 - 220
= $450

Number of sets of rulers = 3
Number of sets of correction tapes = 1

Cost of 1 set of rulers
= 450 ÷ 3
= $150

Amount that 1 set of correction tapes cost more than 1 set of rulers
= 220 - 150
= $70

Number of items in 1 set
= 70 ÷ 1.40
= 50

Price of a correction tape
= 220 ÷ 50
= $4.40

Answer(s): $4.40