Library / UKMT Junior Mathematical Challenge /4 of 274

UKMT Junior Mathematical Challenge, 2020

Algebra Difficulty 1.0 Junior Find the answer United Kingdom

How many of these equations have the solution $x = 12$ ? $x - 2 = 10$ , $\frac{x}{2} = 24$ , $10 - x = 2$ , $2x - 1 = 25$

(A) $4$ (B) $3$ (C) $2$ (D) $1$ (E) $0$

We don't reproduce this publisher's solutions. Their own solution is here — work the problem first.

Want a route through all this instead of an archive? The track puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.

Source: UK Mathematics Trust, licensed © UK Mathematics Trust; past papers published free at ukmt.org.uk. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.