Write the prime factorization of each number.
b) 260
a) 216​

a.216:2×2×2×3×3×3

b.260-2×2×5×13

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.