Grade A sugar costs £75 per kg and grade B sugar costs £50 per kg. Anne mixed the two grades and sold the mixture at £72 per kg. I'm doing so she made a 20% profit. In what ratio did she mix them?

The ratios must be 88% of grade A sugar and 12% of grade B sugar.

Step-by-step explanation:

On the grade A every kg costs £75, while on the grade B every kg costs  £50. The final mixture we want to make needs to cost  £72 per kg. We will sum a certain mass of grade A, "x", with a certain mass of grade B, "y". The sum of these masses must be equal to 1 kg. So we have:

Since we want the final mixture to cost  £72, we need to satisfy:

Solving the system of equation will reveal the ration that must be used.

The ratios must be 88% of grade A sugar and 12% of grade B sugar.

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.