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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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Answer:

One solution was found :

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Step-by-step explanation:

Step by step solution :

Step  1  :

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Equation at the end of step  1  :

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Adding fractions that have a common denominator :

2.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

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Rewriting the whole as an Equivalent Fraction :

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Rewrite the whole as a fraction using  3  as the denominator :

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Step  4  :

When a fraction equals zero :

4.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

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