Question

A certain sum amounts to Rs.7350 in 2 years and to Rs.9261 in 3 years.find the sum and rate percent?

Answer 1

Answer:

= 5400; Rate = 50/3 %, HOPE IT HELPS YOU

Step-by-step explanation:

A certain sum amounts to Rs.7350 in 2 years and to Rs.8575 in 3 years.find the sum and rate percent?

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Interest for 1 year is the same whether it's simple interest or the compound interest.

Now interest of third year = 8575 - 7350 = 1225; means principal for this interest is 7350 if comound interest is takenIf 7350 is the principal interest = 1225

if 100 is the principal interest=(1225/7350)*100 =50/3%

When a thing increases for two successive times the overall increase on initial amount = a + b + (a * b)/100

Therefore overall interest for two years = 50/3 + 50/3 + [(50/3)*(50/3)]/100 = 325/9 %

Therefore amount after 2 years = 100 + 325/9 = 1225/9

If 1225/9 is the amount principal =100

if 7350 is the amount principal =(900/1225)*7350 =5400

So sum = 5400; Rate = 50/3 %

Answer 2

Answer:

PLEASE HELP

$\boxed{\orange{Given}}$

U = { 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 }

A = { $\bf{x\::\:x\:is\:an\:integer\:1 \leq x \leq 6}$ }

B = { $\bf{x\::\:x\:is\:an\:even\:integer\:4 \leq x \leq 9 }$ }

C = { $\bf{x\::\:x\:is\:an\:integer\:1 \leq x^{2} \leq 16}$ }

$\mathfrak{then\:,\: find\:,}$

i ) $( A \cup B ) \cap C$

ii ) $( A\:-\:C ) \cap B^{/}$

iii ) $( A\:-\:B )^{/} \cup C$

iv ) $( A \cap B ) \cup C^{/}$