Question

The strength of an audition is increased by 30% in the first year and decreased by 10% in the secor
If the strength of the audition, now, is 1404. Find the original strength of the audition.​

Answer 1

Step-by-step explanation:

percentage (increase)in the first year=30%

percentage(decrease)in the second year=10%

strength after 2nd year=1404

let x be the initial strength ...

then x +30%=strength at the end of the 1st year

x+30% of x=x + 0.3=1.3x

and it will be the strength at the beginning of the second year...

percentage decreased = 10%

so 1.3x-10%=strength at the end of the second year

1.3x-10%(1.3x) = 1404

1.3x - 0.13x=1404

1.17x=1404

x=1404/1.17=1200 is thr original/initial strength...

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