Cora is building block towers of two different heights. In each tower, the ratio of blue blocks to green blocks remains the same as shown in the diagram. There is 4 blue blocks and 1 green blocks by

Cora is building block towers of two different heights. In each tower, the ratio of blue blocks to green blocks remains the same as shown in the diagram. 

There is 4 blue blocks and 1 green blocks by the way. 

The table shows the number of blue blocks and the number of green blocks that Cora will use on each of her towers.

Based on the ratio, complete the missing values in the table.

Tower         Blue blocks            green blocks

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A                       16                                ???

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B                      ???                                    7