Question

109, कोई व्यक्ति अपनी आय का 80% खर्च करता है, निर्वाह खर्च
वृद्धि होने के कारण उसके खर्च में 37-% की वृद्धि होती
तथा उसकी आय में 16% की वृद्धि होती है. उस व्यक्ति
वर्तमान बचत कितनी है? (जीवन बीमा निगम परीक्षा, 2015
110, राम अपनी मासिक आय का 20% अपनी घरेलू आवश्यकता
पर शेष यारा​

Answer 1

Answer:

68% less than his previous saving.

Step-by-step explanation:

Let the salary of the man = x rupees,

∵ His expenditure = 80% of x = 0.8x

So, his savings = (100-80)% of x = 20% of x = 0.2x,

Now, after increasing his salary 16%,

New salary = (100+16)%of original salary

= 116 % of x

= 1.16x

Also, according to the question,

His expenditure in increased by 37%,

So, His new expenditure = (100+37)% of original expenditure

= 137% of 0.80 x

= 1.096x

So, his new savings = 1.16x - 1.096x = 0.064x

Thus, the percentage decrease in his savings = $\frac{0.2x-0.064x}{0.2x}\times 100$

$=68\%$

Hence, his saving decrease by 68 %.