Two brothers, Dev and Rohan, save money weekly. Dev's savings after x weeks is Rs (120x + 200) and Rohan's is Rs (150x + 50). Form an equation for when their savings are equal and find x (in weeks). Then state Dev's savings at that time (in Rs).

Question

Accepted Answer

x = 5, Rs 800. 120x + 200 = 150x + 50, so 200 - 50 = 150x - 120x, 150 = 30x, x = 5. Dev's savings = 120(5) + 200 = 600 + 200 = Rs 800.

Two brothers, Dev and Rohan, save money weekly. Dev's savings after $x$ weeks is Rs $(120 x + 200)$ and Rohan's is Rs $(150 x + 50)$ .
Form an equation for when their savings are equal and find $x$ (in weeks). Then state Dev's savings at that time (in Rs).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Variables on Both Sides practice

Two brothers, Dev and Rohan, save money weekly. Dev's savings after x weeks is Rs (120x+200) and Rohan's is Rs (150x+50).Form an equation for when their savings are equal and find x (in weeks). Then state Dev's savings at that time (in Rs).

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Variables on Both Sides practice

Two brothers, Dev and Rohan, save money weekly. Dev's savings after $x$ weeks is Rs $(120 x + 200)$ and Rohan's is Rs $(150 x + 50)$ .
Form an equation for when their savings are equal and find $x$ (in weeks). Then state Dev's savings at that time (in Rs).