Answer:
£70
Step-by-step explanation:
y×0.8=56
56/0.8= 70
70×0.8=56
you're just reversing the discount :)
Answer:
10.50 is the interest
Step-by-step explanation:
B = p(1 + r)^t
P = 50
r = .10
t = 2
B = 50(1 + .1)^2
= 50(1.1)^2
= 50(1.21)
= 60.5
But we want to know the interest and this is the balance
60.5- 50 = 10.5
Answer:
x = (a - 2w)/2
Step-by-step explanation:
a = 2x + 2w
a - 2w = 2x
(a - 2w)/2 = x
