9. A number is times another number. If their sum is 70, find the numbers.
Answers
Answer:
50
Step-by-step explanation:
Requirednumber=50
Step-by-step explanation:
Let \: the \: number = xLetthenumber=x
\begin{gathered}\frac{2}{5} \: times \: of \: the \: number \\= \frac{2x}{5}\end{gathered}
5
2
timesofthenumber
=
5
2x
/* According to the problem given, we get
Sum \: of \: the \: number = 70Sumofthenumber=70
\implies x + \frac{2x}{5} = 70⟹x+
5
2x
=70
\implies \frac{5x+2x}{5} = 70⟹
5
5x+2x
=70
\implies \frac{7x}{5} = 70⟹
5
7x
=70
\implies 7x = 70 \times 5⟹7x=70×5
\implies x = \frac{70\times 5}{7}⟹x=
7
70×5
\implies x = 10 \times 5⟹x=10×5
\implies x = 50⟹x=50
Therefore,
Required \: number = 50Requirednumber=50
Answer:
Let the first number = x
and second number is two fifth times so number = 2/5x
given that the sum = 70
2/5x + x = 70
7/5x = 70
x = 350/7
x = 50
50 is your answer so number which is required we find as 50
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