Library / /50 of 860
Algebra Difficulty 4.7 AIME Find the answer
When a single number is added to each member of the sequence 20, 50, 100, the sequence becomes expressible as x,ax,a2x. Find a.
A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.
Solution
Want a route through all this instead of an archive?
The track
puts 2,000 problems in a working order, from AMC 10 level to the IMO shortlist.
Source: Omni-MATH,
licensed Apache-2.0.
Statement and solution reproduced as published; topic and difficulty added by this site.