https://www.jobtestprep.co.uk/shl-numerical-test-answers#numericalsample
I don't understand the logic behind how to get the answer in SHL Numerical Reasoning Test Question 4 - Graphs and Tables #3
Specfically this part of the answer: The Northern region produced 40% more Referrals than the Southern region.
Or in the form of an equation:
(I) NR = 1.4 x SR
We already know the total number of referrals:
(II) NR + SR = 180
Plugging (I) into (II):
2.4 x SR = 180
SR = 75
NR = 105
I'm lost what happens after you plug in I into II and how 2.4 is calculated. I'm guessing it has something to do with fractions but I'm stumped.