If we assume that Adam raked x liters of the leaves then Tapiwa raked 105% of the liters of leaves by Adam (1.05 x liters). But, we know that the total liters of leaves are 697.
Thus x + 1.05 x = 697
= 2.05 x = 697
thus x = 340
Thus Adam raked 340 liters of leaves while Tapiwa raked 357 liters
Hence the number of liters by Adam as required in the question is 340 liters.