We want 4/5 of a number to be 144. This means that

Multiplying both sides by 5/4, we have

Answer: 22
Step-by-step explanation:
4 - (-18) = 4 + (+ 18) = 22
1 mile = 1.6 kms
22 miles / sec = 22*1.6 = 35.2 km / sec
Number of kms that Venus travel in 2 seconds = 70.4