The correct option is A >
To compare two rational numbers, we first make convert each of them to equivalent rational numbers by making their denominators equal, and then we compare their numerators.
LCM of the denominators 5 and 7 is 35
∴3×75×7=2135 and 2×57×5=1035
Comparing 2135 and 1035, we see that 2135>1035
Hence, 35>27