Answer:
C
Step-by-step explanation:
RATATATATATATATATATATATATTATATATATATAAT
Answer: it is 4
Step-by-step explanation:
Answer: 9/52
Step-by-step explanation:
1*2*0.2 = 0.4
Pipe drains 0.4m3 in 30min
Volume of tank = 0.5 * (1.4 + 0.6) * 2 * 1 = 2m3
Time taken = 2/0.4 * 30 = 150min