Answer:
1.5 wims
Explanation:
Use dimensional analysis.
1 jorp = 3 wims
Divide both sides of the equivalence equation above by (3 wims).
Eq. 1
Divide both sides of the equivalence equation above by (1 jorp)
Eq. 2
Do the same with the other given equation.
2 jorps = 4 saffs
Divide both sides of the equivalence equation above by (4 saffs).

Eq. 3
Divide both sides of the equivalence equation above by (2 jorps)

Eq. 4
Now notice that all fractions in equations 1 through 4 are equal to 1. Therefore, if you multiply a measurement by one of those fractions, you are not altering the measurement. you are just changing the units.
Start with 1 saff:

We need to go from saffs to wims, but there is no direct fraction to convert saffs to wims, so first, we convert saffs to jorps. We need to cancel out saff and end up with jorp, so we use Eq. 3, which has saffs in the denominator and jorps in the numerator.

The saffs will cancel out leaving jorps. Now we need from jorps to wims. We need a conversion fraction with jorps in the denominator to cancel out jorps, and wims in the numerator. We use equation 2.

Now we do the math with all the numbers in the numerators and denominators. After we cancel out the units that can be canceled. we end up with wims.

