The answer is d.
good luck
Answer: 6 trombones
Step-by-step explanation:
We can set up a proportion.
Let x be the number of trombones there are.

We can cross multiply:
4*9 = 6x
6x = 36
Divide both sides by 6:
x = 6
Whenever you have __% more of something and want to find the new value, first convert the percent to a decimal. Then multiply the original value by (1.00+that decimal).
You have 6480 kg of sugar. 75%=0.75. If you want 75% more sugar, you would want 6480*(1.00+0.75) = 6480*(1.75) = 11,340 kg of sugar.
Sorry if I am wrong I am not 100% sure I think it’s 13