Answer:
b
Step-by-step explanation:
Answer:
Ram: 21, Hari: 12
Step-by-step explanation:
To solve the problem, we can use the following notation. We call:
= Ram's age at present
= Hari's age at present
We know that:
- Ram is 9 years older than Hari --> mathematically, this can be written as
![r=h+9](https://tex.z-dn.net/?f=r%3Dh%2B9)
- Three years ago, Ram was two times as old as Hari was --> mathematically, this can be written as
![r-3=2(h-3)](https://tex.z-dn.net/?f=r-3%3D2%28h-3%29)
where (r-3) is Ram's age 3 years ago, while (h-3) is Hari's age 3 years ago
Substituting eq.(1) into eq.(2), we find:
![(h+9)-3=2(h-3)\\h+9-3=2h-6\\h+6=2h-6\\h=12](https://tex.z-dn.net/?f=%28h%2B9%29-3%3D2%28h-3%29%5C%5Ch%2B9-3%3D2h-6%5C%5Ch%2B6%3D2h-6%5C%5Ch%3D12)
So, Hari's age is 12; therefore, Ram's age is
Answer:
x=70
Step-by-step explanation:
![2x + 1 = 141 \\ 2x = 140 \\ x = 70](https://tex.z-dn.net/?f=2x%20%2B%201%20%3D%20141%20%5C%5C%202x%20%3D%20140%20%5C%5C%20x%20%3D%2070)
No
Hopefully you
Got it correct
20/28 = 3x / (4x + 2)
84x = 20(4x + 2)
84x - 80x = 40
4x = 40
x = 10
so the 2 lines are equal to 30 and 42