2. The population of a town increased from 60000 to 67500. What is the increase percent?
3. A man got a 15% increase in his salary. If his new salary is 28750 , find his previous salary.
4. The salary of Mr. Jackson is $ 18500 per month and is now decreased by 15 %. Find his new salary per month.
5. A man bought a motorcycle for $25500 and made repairs that cost $5000. He sold the motorcycle by $45000. Find his percentage profit/loss.
Number 1
%Commision = 5%
Sell = $4,800
Commision = %Commision × Sell
Commision = 5% × $4800
5
Commision = —— × $4800
100
Commision = $240
Number 2
Population before = 60,000
Population after = 67,500
Population increase = after - before
= 67,500 - 60,000 = 7,500
increase
%increase = —————— × 100%
before
7,500
%increase = —————— × 100%
60,000
%increase = 12.5%
Number 3
%increase = 15%
Salary after = 28,750
%before = 100%
%after = %before + %increase
= 100% + 15% = 115%
%before
Salary before = —————— × Salary after
%after
100%
Salary before = ———— × 28,750
115%
Salary before = 25,000
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