y - x = 1.
or, y= 1+x
y - 2x = 3.
=>1+x -2x= 3 (substituting the value of y)
=>-x= 2
=>x= -2
y = -2+1 = -1
Therefore, x = -2 and y = -1
Yes you are correct its B
can you make me brainlest
Answer:
Therefore he paid $10440 in 4 year.
Step-by-step explanation:
Given, Rachit borrowed $15000 from his friend. He gave $3000 at the rate 15% for 4 year.
Interest(I₁)= Prt here P= $3000, r=15% and t = 4 year
=$(3000×0.15×4)
=$1800
He gave $(15000-3000)= $12000 at the rate of 18%.
Interest(I₂)= Prt here P= $12000, r=18% and t = 4 year
=$(12000×0.18×4)
=$8640
Therefore he paid =$(1800+8640)=$10440 in 4 year.