21 imperial quarts in imperial cups

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

We know (by definition) that: $1\mathrm{imperialquart}\approx 4\mathrm{brcup}$

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

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

Conclusion: 21 ⁢ imperialquart ≈ 84 ⁢ brcup

Conversion in the opposite direction

The inverse of the conversion factor is that 1 imperial cup is equal to 0.0119047619047619 times 21 imperial quarts.

It can also be expressed as: 21 imperial quarts is equal to $\frac{1}{\mathrm{0.0119047619047619}}$ imperial cups.

Approximation

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