Answer:
4.24
Step-by-step explanation:
Total price = price of the book + 5% of the price of the book
T = total price P = price of the book G = GST
T = P + G
and
G = 5% of P = 0.05P
therefore
T = P + 5%P = 1P + 0,05P = 1.05P
P = T/1.05 = 89/1.05 ≅ 84.76 (it is 84.7619047619)
G = 89 - 84.76 = 4.24
N = how many blueberries Nico picked
11n = how many blueberries Kai picked
11n + n = 936
12n = 936
n = 78
11 (78) = 858 blueberries
Nico picked 78 and Kai picked 858
Multiply 1.275 with 51 to get the answer (65.025)