General Mathematics

Question:(i) What percent of 72 is 6 ?
(ii) What percent of 7 is 84 ?
(iii) What percent of 2.4 kg is 8 gms ?
(iv) What percent of 6.5 litres is 130 ml ? 
Answer(i) Required percentage = `(6/72 xx 100)`% = `8 1/3`%.

(ii) Required percentage = `(84/7 xx 100)`% = 1200%.

(iii) Required percentage = `(8/(2.4 xx 1000) xx 100)`% = `1/3`%.

(iv) Required percentage = `(130/(6.5 xx 1000) xx 100)`% = 2%.

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Question:If A's income is 30% more than that of B, then how much percent is B's income less than that of A ? 
AnswerRequired percentage = `{33/(100 + 33) xx 100}` % = 24.8%.

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Question:If A's height is 24% less than that of B, then how much percent is B's height more than that of A ? 
AnswerRequired percentage 

   = `{24/(100-24) xx 100}`% 

   = 31.57%.

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Question:If the price of tea is increased by 20%, find by how much percent must a householder reduce her consumption of tea so as not to increase the expenditure ? 
AnswerReduction in Consumption 

 = `{ R/(100+R) xx 100}` % 

 =`(20/120 xx 100)` % 

 = `16 2/3` %.

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Question:If the price of sugar decreases by 20%,find by how much percent must a house holder increase her consumption of sugar so as not to decrease the expenditure ? 
AnswerIncrease in consumption 

 = `{R/(100-R xx 100)}` %

 = `(20/80 xx 100)` % 

 = 25 %.

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Question:(i) What percent of 72 is 6 ? (ii) What percent of 7 is 84 ? (iii) What percent of 2.4 kg is 8 gms ? (iv) What percent of 6.5 litres is 130 ml ?

Question:If A's income is 30% more than that of B, then how much percent is B's income less than that of A ?

Question:If A's height is 24% less than that of B, then how much percent is B's height more than that of A ?

Question:If the price of tea is increased by 20%, find by how much percent must a householder reduce her consumption of tea so as not to increase the expenditure ?

Question:If the price of sugar decreases by 20%,find by how much percent must a house holder increase her consumption of sugar so as not to decrease the expenditure ?