2 a 7 30 July 8, 2019 16 32 64 128 2 7 * 300 2 7 * 3000 2 7 30 5 2 x 7 )=- 30 2 20 7 30 x15 2 30 7 15 2 3 7 30 2 30x 7 2 1 7 30 2 40 7 30 2 4 7 30 2 7 30 0 2 45 7 30 2 7 30 is how many hours 2 7 306