25. 250g of sugar costs #150 at shop X. 100g of sugar costs #95 at shop Y. The difference in cost per kg is:
A N55
B N220
C N250
D N260
E N350

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Which expression will have the same sum as 3_8 + 1/4?

Polynomial that can be factored as (3x-4)(3x+4)