Mathematical and Physical Journal
for High Schools
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Problem P. 4750. (September 2015)

P. 4750. Silver-gold alloys can be made in any ratio of the two constituents. The weight of a particular piece of this type of alloy in air is 15 N, whilst its weight in water is 14 N. What is the percent composition by mass of gold in the alloy?

(4 pont)

Deadline expired on October 12, 2015.


192 students sent a solution.
4 points:144 students.
3 points:12 students.
2 points:30 students.
1 point:5 students.
0 point:1 student.

Problems in Physics of KöMaL, September 2015