Imani and Adam each improved their yards by planting grass sod and geraniums. They bought their supplies from the same store. Im
ani spent $160 on 10 ft2 of grass sod and 10 geraniums. Adam spent $156 on 6 ft2 of grass sod and 12 geraniums. Find the cost of one ft2 of grass sod and the cost of one geranium.
Let's call the cost of one grass sod x, and the cost of 1 geranium y. Then, we get the equations 10x + 10y = 160, and 6x + 12y = 156. Divide the first equation by 10 and the second by 6 to get x + y = 16 and x + 2y = 26. Subtract the first equation from the second to get that y = 10, so x = 6.
Well, if the selling price was 210, and that's the 100%, then if he adds 60% to that, the new price will be 160% of 210... well, if 210 is the 100%, what's 160% of that?
