21 imperial cups in imperial quarts

Conversion formula
How to convert 21 imperial cups to imperial quarts?

We know (by definition) that: $1\mathrm{brcup}\approx 0.25\mathrm{imperialquart}$

We can set up a proportion to solve for the number of imperial quarts.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 21 ⁢ brcup ≈ 5.25 ⁢ imperialquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial quart is equal to 0.19047619047619 times 21 imperial cups.

It can also be expressed as: 21 imperial cups is equal to $\frac{1}{\mathrm{0.19047619047619}}$ imperial quarts.

Approximation

An approximate numerical result would be: twenty-one imperial cups is about zero imperial quarts, or alternatively, a imperial quart is about zero point one nine times twenty-one imperial cups.