Solve (20+30)y-1400/1400geq0.25

$$\frac{ (20+30)y-1400 }{ 1400 } \geq 0.25$$

Solve for y

$$y\geq 35$$

Solution Steps

Multiply both sides by 1400. Since 1400 is positive, the inequality direction remains the same.

$$\left(20+30\right)y-1400\geq 0.25\times 1400$$

Add 20 and 30 to get 50.

$$50y-1400\geq 0.25\times 1400$$

Multiply 0.25 and 1400 to get 350.

$$50y-1400\geq 350$$

Add 1400 to both sides.

$$50y\geq 350+1400$$

Add 350 and 1400 to get 1750.

$$50y\geq 1750$$

Divide both sides by 50. Since 50 is positive, the inequality direction remains the same.

$$y\geq \frac{1750}{50}$$

Divide 1750 by 50 to get 35.

$$y\geq 35$$