Answer:
The number of words Tom typed are 144 and number of words Maria typed are 720 .
Step-by-step explanation:
As given
Tom and Maria typed in words in the ratio of 1 : 5 in 20 minutes.
They typed 864 words altogether.
Let us assume that the y be the scalar multiple of the Tom and Maria typed in words .
Number of words Tom typed = y
Number of words Maria typed = 5y
Thus the equation becomes
y + 5y = 864
6y = 864

y = 144
Number of words Tom typed = 144
Number of words Maria typed = 5 × 144
= 720
Therefore the number of words Tom typed are 144 and number of words Maria typed are 720 .