The correct option is A 2540, 2640, 2740
Step1:
Write the number a and b in pq form
Multiply the numerator and denominator of both 35 and 45 by (3+5) we get,
35 × 88=2440
Similarly,
45 × 88=3240
Therfore, The fractions between 35 and 45 are 2540 , 2640, 2740.