Time needed to reduce charge of a capacitor

[catan]

Homework Statement

A 20 uF capacitor initially charged to 20 uC is discharged through a 1.0 kOlhms resistor. How long does it take to reduce the capacitor's charge to 8.0 uC?

Homework Equations

I=dQ/dt

The Attempt at a Solution

I know that dQ = 12 uC. What I can't figure out is how to get I from the given data. I'm assuming I need to use the 20 uF along with the resistance to find the I but I don't know how that can be done. I appreciate any help, thanks!

 

[OmCheeto]

Homework Statement

A 20 uF capacitor initially charged to 20 uC is discharged through a 1.0 kOlhms resistor. How long does it take to reduce the capacitor's charge to 8.0 uC?

Homework Equations

I=dQ/dt

The Attempt at a Solution

I know that dQ = 12 uC. What I can't figure out is how to get I from the given data. I'm assuming I need to use the 20 uF along with the resistance to find the I but I don't know how that can be done. I appreciate any help, thanks!

I think you need more relevant equations. Do you know what the initial voltage is across the capacitor?

 

[catan]

I figured it out