A piece of ribbon is cut into three lengths in the ratio 3:5: 7. If the smallest length
is 12 cm, find:
a) the length of the longest piece of ribbon
b) the length of the original piece of ribbon

Nick and nora are married and have three children in college. they have an adjusted gross income of 47,400. if their standard deduction is 12,600 itemized deductions are 14,200 and they get an exemption of 4000 for each adult and each dependent what is their taxable income

If 25% of y is 30, what is 60% of y?

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?