how much is prs - pqr
(1) 180-prs + pqr + qpr(30) = 180. Sufficient.
(2) just symmetric info as above. Sufficient.
We dont need to know prs and pqr in order to know their difference.
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DS Problem #1 - How would you solve it?
Source: Beat The GMAT — Data Sufficiency |
(1) 150 = pqr + 180 - prs. this means that PRS - PQR = 180 - 150 = 30 --> SUFFICIENTpalvarez wrote:how much is prs - pqr
(1) 180-prs + pqr + qpr(30) = 180. Sufficient.
(2) just symmetric info as above. Sufficient.
We dont need to know prs and pqr in order to know their difference.
(2) PQR + PRQ = 150 --> PQR + 180 - PRS = 150 --> 30 = PRS - PQR --> SUFFICIENT
Fantastic, thanks! Good to remember if you're asked for a difference, addition, multiplication, etc...you just have to get the combination to equal something definite.
