For this case we have to:
n: Represents the weight of Mary in Kg.
If your sister weighs 15 kg less we have:

Where "y" represents the weight of his sister in kg.
To find how many times Mary is heavier than her sister, we must divide Mary's weight by her sister's weight.
We have then:

Answer:
Mary is
times heavier than her sister.
Answer: what do you mean by a word problem?
Step-by-step explanation: 24 per hour = n times 10 hours = d so, 24(10)= $240
The second part of the equation -
8 hours = d times $20 per hour = n so, 8(20) = $160
$240+$160=$400 last week
Ten thousand-80000
hundred-81100
ten-81070
thousands-81000
Answer: 5 games
Step-by-step explanation: They need to win half their games for a .500 record and half or 30 is 15. They already won 10 so they need to win 15- 10 = 5 more games to have a .500 record.