Answer :
We set up a proportion: ?/22.50= 35/100
Cross multiply:
100*?= 22.50*35
⇒ ?= 22.50*35/100= 7.88
Nathan saved $7.88~
Cross multiply:
100*?= 22.50*35
⇒ ?= 22.50*35/100= 7.88
Nathan saved $7.88~