please answer all the questions leaving the first one please answer fast it is very urgent
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please answer all the questions leaving the first one please answer fast it is very urgent
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Here's the answer:
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(2)
Price of food = 685₹
Tax = 15% of price of food
= 15% of 685₹
= (15/100)×685₹
= 68.5₹
•°• Total money to be paid = 685₹+68.5₹
= 753.5₹
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(3)
Let total Area of wall be x
Given, 48% of x is painted
and 48% of x= 240
(48/100)×x=240
=> x= (240×100)/48
=> x= 500
•°• Total Area of wall = 500 sq. feet
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(4)
%increase = 15%
New salary = 9936₹
old salary + (old salary × %Increase) = New salary
=> New salary = Old salary (1+%Increase)
Let old salary be x
x(1 + 15%)= 9936₹
=> x[1+(15/100)] = 9936₹
=> 115x/100= 9936₹
=> x= (9936×100)/115
=>x= 8640₹
•°• Old salary= 8640₹
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(5)
Let total students be x
45% of x are girls
Remaining, (100-45)%=55% are boys
Given, 55% of x=440
=> (55/100)×x= 440
=> x= (440×100)/55
=> x= 800
45% of x= (45/100)×800
= 45×8
= 360
•°• No. of girls= 360
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(6)
Let Total potatoes weight initially be x
70% of x are sold
Remaining (10-70)% = 30% are unsold
Given, 30% of x = 150 kg
=> (30/100)×x = 150
=> x = (150×100)/30
=> x = 500 kg
•°• Total weight of potatoes before selling = 500 kg
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(7)
Let total No. of Rohan's friends be x
90% of x have attended party
Remaining, (100-90)%= 10% have not attended party
Given, 10% of x= 3
=> (10/100)×x = 3
=> x = (3×100)/10
=> x = 30
•°• Total No. of Rohan's friends= 30
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(8)
Let total No. of questions be x
70% of x are answered
Remaining (100-70)% = 30% of x are unanswered
Given, 30% of x = 6
=> (30/100)×x = 6
=> x = (6×100)/30
=> x = 20
•°• Total No. of questions asked = 20
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(9)
Given, Total students= 45
Out of 45, 5 are absent
=> Students Remaining= 40
30% of 40 failed to do homework
Remaining, (100-30)% = 70% of 40 did the homework
=> (70/100)× 40
=> 28
•°• No. of students did their homework = 28
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Hope it helps