Answer:
12 and 36
Step-by-step explanation:
Call the age of both Bill and his father is a and b, respectively
we have:
b=3a
b-3=4(a-3) ->b=4a-12 -> 3a=4a-12 ->a =12 -> b=36
Answer:
<em>37%</em>
Step-by-step explanation:
Add up the percentages and subtract them by 1.00:
- 35% & 28% = 0.35 & 0.28
- 0.35 + 0.28 = 0.63
- 1.00 - 0.63 = 0.37
- 0.37 = 37%
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Answer:
x = 25
Step-by-step explanation:
Given:
Amount invest p = Tk.x
Number of year t = 4
Rate r = x%
Profit = Tk.x
Find:
Value of x
Computation:
Profit = prt / 100
Tk.x = [(Tk.x)(x)(4)] / 100
x = 100 / 4
x = 25
Answer:
20%
Step-by-step explanation:
8⁄40 = ⅕ = 20%
The Greatest Common Factor [GCF] is 8, both denominator and numerator by 8, to get ⅕, which is 20% [0,2 - twice to the right → 20% (attach the percentage symbol)].
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Answer:
8.6 × 10^5
Step-by-step explanation:
New Jersey 8th graders = 920,000
Rhode island 8th graders = 60,000
Difference in Rhode island 8th graders and New Jersey 8th graders population
= 920,000 - 60,000
= 860,000
Answer in scientific notation
860,000
The decimal point will move 5 places in
= 8.6 × 10^5
