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Arada [10]
3 years ago
13

Ni Hua is an adventurous traveler. He skydives twice in every island he visits and skydives thrice in every peninsula he visits.

In the last decade, Ni Hua went skydiving a total of 45 times in the 19 islands and peninsulas that he visited.
Mathematics
2 answers:
raketka [301]3 years ago
6 0
What is the question?
Molodets [167]3 years ago
6 0

Solution:

Let Ni Hua visited x  island and y peninsulas.

we are given that

Ni Hua went skydiving a total of 45 times in the 19 islands and peninsulas that he visited.

So we can write

x+y=19......(i)

2x+3y=45....(ii)

Now solve these two equations togethere using substitution  as below:

2(19-y)+3y=45\\
\\
38-2y+3y=45\\
\\
y=45-38\\
\\
y=7

So we can write x=19-7=12

Hence Let Ni Hua visited 7  island and 12 peninsulas.


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