72 minutes
We require their hourly rate of work
Maria cleans the house in 1 hour
Sasha cleans of the house in 1 hour
let x be the time it takes both to clean the house
+ =
multiply through by 6x
3x + 2x = 6
5x = 6 ⇒ x =
Together they can clean the house in 72 minutes
Answer:
Correct
Correct
Incorrect
Step-by-step explanation:
QS/AC=6/60=1/10
QR/AB=QR/50=1/10
QR=5
SO THAT TRIANGLE ABC IS EQUAL TO TRIANGLE QRS(2SIDES PROPORTIONAL.INC. ANGLE)
Answer:
Train A - 50 miles per hour
train B - 30 miles per hour
Step-by-step explanation:
Let x mph be the speed of the train B, then the speed of the train A is (x+20) mph.
In 3 hours,
- train A travels 3(x+20) miles
- train B travels 3x miles
In total, they covered the distance of 240 miles, so