Answer:
younger sibling = 29 years
older sibling = 35 years
Step-by-step explanation:
Let
x = younger sibling
y = older sibling
x + y = 64 (1)
The older sibling was born 6 years before their young sibling
x = y - 6 (2)
Substitute x = y - 6 into (1)
x + y = 64
y - 6 + y = 64
2y = 64 + 6
2y = 70
y = 70/2
y = 35 years
Substitute y = 35 into (2)
x = y - 6
x = 35 - 6
x = 29 years
It would take him 7.2hours
Show work
262/5=52.4
52.4•7.2=377.28
3/4 a room a day or .75 rooms a day.
Answer:
x = 6y
Step-by-step explanation:
x = 3z and z=2y
Substitute the second equation into the first
x = 3 (2y)
x = 6y