ecarter8967
03.02.2021 •
Mathematics
1.) 63 is 75% of what number?
Enter your answer in the box.
2.) 81 is 18% of what number?
Enter your answer in the box.
3.) What number is 40% of 135?
Enter your answer in the box.
4.) Olivia wants to walk 8000 steps today. She walked 45% of this total before lunch.
How many steps did Olivia walk before lunch?
Enter your answer in the box.
5.) Kirk's family drove 36 miles in 50 minutes, which was 48% of the distance to his grandmother's house.
What was the total distance in miles to Kirk's grandmother's house?
A.) 17.28 miles
B.) 24 miles
C.) 48 miles
D.)75 miles
( YOU DON'T HAVE TO ANSWER ALL OF THEM JUST BUT WHICH ONE YOUR ANSWERING)
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Ответ:
Number 1: 84.
Step-by-step explanation:
Ответ:
If Ben is x years old, then twice his age is 2x, and 5 years more than this is 2x+5.
So, Ben's and Teresa's ages are, respectively, x and 2x+5.
So, the sum of their ages is
If Ben is 7 years old, i.e. if x=7, the sum becomes