5x+61.50=78 and then subtract and get 5x=16.5 divide by 5 and get 3
What do you need help with
Answer: $100,000
Step-by-step explanation:
Let P be the amount he invested in 5% profit .
then 250,000-P be the amount he invested in 10% profit .
The total profit he earns at 5% =5% of P
⇒The total profit he earns at 5 %=0.05P
Now, The total profit he earns at 10% =10% of (250,000-P)
⇒The total profit he earns at 10%=![0.1(250,000-P)=25,000-0.1P](https://tex.z-dn.net/?f=0.1%28250%2C000-P%29%3D25%2C000-0.1P)
According to the question,
![3(0.05P)=25,000-0.1P\\\Rightarrow\ 0.15P=25,000-0.1P\\\Rightarrow\ 0.25P=25,000\\\Rightarrow\ P=\frac{25000}{0.25}\\\Rightarrow\ P=100,000](https://tex.z-dn.net/?f=3%280.05P%29%3D25%2C000-0.1P%5C%5C%5CRightarrow%5C%200.15P%3D25%2C000-0.1P%5C%5C%5CRightarrow%5C%200.25P%3D25%2C000%5C%5C%5CRightarrow%5C%20P%3D%5Cfrac%7B25000%7D%7B0.25%7D%5C%5C%5CRightarrow%5C%20P%3D100%2C000)
Thus, the money he invest in the company that made 5%= $100,000
The answer is B
√240= √16 * √15 (√16= 4)
answer is 4√15