Math SAT Q15 #shorts

If a/b = 2, what is the value of 4b/a?

#shorts #maths #sat #satmath #satprep #mathematics

[AjaiGill]

I would say rearrange to have a=2b, then substitute into the expression. 4b/a=4b/2b then it simplifies to 2. Seems a simpler method to me 🤷‍♂️

[Cool_Name_]

It's easy. The reciprocal of a/b=b/a and reciprocal of 2=1/2 so 4×1/2=2.

[Mastergoatyt]

My 9th grade geography teacher gave us Khan academy assignments and I was the only one that encountered pre-calculus problems. And I saw problems like this, I basically saw a as 2b, so 4b/2b is 2

[sciencedoneright]

Honestly, these are elementary problems, please make shorts with both simple and advanced problems

[slayer]

Average 10 year old Asian can solve this without pen and paper.