1. Aman got a 10% increase in his salary. If his new salary is 3 1,54,000, find his
original salary.
2. On Sunday 845 people went to the Zoo. On Monday only 169 people went. What
is the per cent decrease in the people visiting the Zoo on Monday?
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Solution: 1
Let the original salary be Rs.100.
Therefore New salary i.e., 10% increase
= 100 + 10 = Rs.110
because∵ New salary is Rs.110, when original salary = Rs.100
therefore∴ New salary is Rs.1, when original salary = {100}{110}
110
100
therefore∴ New salary is Rs.1,54,000, when original salary = \frac{100}{110}\times154000=Rs. 1,40,000
110
100
×154000=Rs. 1,40,000
Hence original salary is Rs. 1,40,000.
Step-by-step explanation:
676
Answer: Given that on Sunday 845 people went to the zoo and on Monday only 169 people went to the zoo. Now, the decrease of number in the people visiting the zoo on Monday is = (845-169) = 676. Therefore, the percent decrease in the people visiting the zoo on Monday is = (676/845)*100% = 80%.
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