Question

a. The result of a number when increased by 15% is 16. Find the number
b. The result of a number, when decreased by 20% is 192. Find the number ​

Answer 1

Answer:

a.

As per given condition we have,

x+{15/100×x}=161

x+3x/20=161

(20x+3x)/20=161

23x=3220

x=140

b .The result of a number, when decreased by 20% is 192. Find the number

Consider the number = z

So, if we talk about percentage,

Total percentage = 100%

therefore, decreased percentage = 100% - 20%

= 80%

z x80% = 192

z x80/100 = 192

z = 192 x 100 / 80

z = 240

hope it's helpful

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