Answer:
<u>Mary purchased 160 pounds of sand</u>
Step-by-step explanation:
$72÷$0.45=160
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(a) Is 1.25 each.
(b) Is 1.22 each.
(c) Is 1.24 each.
(d) Is 1.20 each.
The correct answer and cheapest per unit, is (d).
Answer:
$16
Step-by-step explanation:
90m+80m=1360
170m=1360
m=8
8 x 2= 16
Answer:
PV = 1414.213562
Step-by-step explanation:
Find:
PV = 8,000*V^(t+3)
Solution:
- Split the the exponent of V into t and 3:
PV = 8,000*V^t*V^3
- We will calculate the V^t and V^3 from information given.
- The present value of 10,000 at the end of 6 years and immediate value of $5,000. De-crypt this statement we have:
10,000*V^6 = 5,000
V^6 = 5,000/10,000
V^6 = 0.5
V^3 = sqrt(0.5)
- Using 2 and 3, De-crypt:
6000*V^t + 56,000*V^2t = 5000
Solving the quadratic in V^t:
V^t = 0.25
- Hence, we have the present value as:
PV = 8,000*V^t*V^3
PV = 8,000*sqrt(0.5)*0.25
PV = 1414.213562
First make both denominators the same. Then compare
