A, b and c are positive integers. a: b=5: 6 and b: c=8: 9

work out the smallest possible value of a+b+c

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up