Two sizes of concrete blocks are being used to build a raised garden bed for strawberries. The first kind of block is 12 inches long and the second is 20 inches long. A row of shorter blocks is laid on top of a row of longer blocks. Using only whole blocks, what is the shortest length for which the two rows of blocks are equally long
+129839 We can find the answer just by getting the least common denominator between 12 and 20
12 = 2^2 x 3
20 = 2^2 x 5
And the LCD = 2^2 x 3 x 5 = 13 x 5 = 60 inches
So 60/12 = 5 and 60/20 = 3
When the length is 60 inches......3 of the 20 inch bocks will have been laid and 5 of the 12 inch blocks will have been laid.
+129839 We can find the answer just by getting the least common denominator between 12 and 20
12 = 2^2 x 3
20 = 2^2 x 5
And the LCD = 2^2 x 3 x 5 = 13 x 5 = 60 inches
So 60/12 = 5 and 60/20 = 3
When the length is 60 inches......3 of the 20 inch bocks will have been laid and 5 of the 12 inch blocks will have been laid.
