Problem Solving (PS) | Re: A certain marching band has fewer than 50 members. During performances

First Column
Formation A -> Write out multiples of 5 under 50.
Formation B -> Write out multiples of 6 under 50.
Formation C -> Write out multiples of 7 under 50.

Second Column
Formation A -> Add 3 to every multiple of 5
Formation B -> Add 5 to every multiple of 6

Formation A -> 20 + 3 = 23
Formation B -> 18 + 5 = 23
This is the only common number, thus there are 23 people in the band.

Formation C -> 7 people per row means 21 + ___ -> this number must be 2.

Option B

Statistics : Posted by Jake7Wimmer • on 16 Nov 2023, 03:42 • Replies 6 • Views 2443

---