SSC CHSL 2024 PYQ — Question 60

The correct answer is option 4 i.e. Decrease, 60%.

According to the given question,

${3 \over 5} - {2 \over 5}$ = $1 \over 5$

This is further increased by 20%,

⇒ ${1 \over 5} \times {120 \over 100}$ = $6 \over 25$

Now, decrease percentage = (old fraction - new fraction)/old fraction × 100

⇒ Decrease percentage = ${{{3 \over 5} - {6 \over 25}}\over {3 \over 5}}\times 100$

⇒ ${{{15 - 6}\over 25}\over {3 \over 5}}\times 100$

⇒ ${{9\over 25}\over {3 \over 5}}\times 100$ = 60%

Hence the required answer is decrease,60%.