Train a departs from point a with a velocity of 150 km/h, train b departs from point b with a velocity of 100 km/h, and the distance between point a and b is 500 km. how long will it take for the trains to meet?

10 hours or 2 hours

Step-by-step explanation:

Condition 1 - Both the trains are moving the a same direction.

Condition 2 - Both the trains are moving in opposite directions.

2 hours.

Step-by-step explanation:

Their combined speed is 100+ 150 = 250 km/h

Speed = distance / time

250 = 500 / t

t = 500/250

= 2 hours.

$3720

step-by-step explanation:

taxable income = $31000

as per the 2018-2019 us tax bracket, the tax rate is 12% for an individual whose taxable income is between $9,526 to $38,700.

so, the tax to be paid by him = 12% of 31000

= 0.12 * 31000     [12% converted to decimal as 0.12]

= $3720