La'Shaun is knitting a scarf for her brother. It took her 1/3 hour to knit 1/2 of a scarf how fast is La'Shauns knitting skills

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

Can someone me with this problem i don't understand i need

How is working backward similar to solving an equation?