Question

Solve the following simultaneous equation and choose the correct solution of the given equation 2y - x = 0 ; 10x + 15y = 105 *

1) (6,6)
2) (3,3)
3) (6,3)
4) (3,6)​

Answer 1

Answer:

option (c)... (6,3)

Step-by-step explanation:

The given equations can be solved by substitution method.

2y−x=0

2y=x

∴x=2y

10x+15y=105 ………….(1)

Substitute x value in (1)

10x+15y=105

⇒10(2y)+15y=105

⇒20y+15y=105

⇒35y=105

⇒y=35105

⇒y=3

Sub y=3 in x

x=2y

⇒x=2(3)

⇒x=6

∴x=6 and y=3.

Hope this helps!!