A. using substitution find the value of the remaining unknown in each of the following formulas. 1.t=rs (s + 1) if r=4 and s=5
2.k=6-5q/2g if q=3 and g=8
3.p=a+b-2c if a=2, b=-1 and c=5
4.l=1/x - 2/y + z if x=4, y=6, and z=2/3

B. a factory back its product into three kinds of facts namely small medium and large the weights of each small medium and large box 18 kg 25 kg and 40 kg respectively there was a small there was a small b medium and c large boxes all together

1.Find the total weight if a=10, b=8, and c=5

C. the bus charges peso sign 12 regular fare and peso sign 11 for senior citizens and students.

1.Find the total bus Fares paid if there are 50 adults, 20 senior citizens, and 15 students on the bus

(plss help me ty I appreciate it)​