Question

find 7,8 question number

Jo intelligent hoga wahi answer daga right
wo bhi solve karka


7ans. 2,000
8ans. 1,600​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

que 7

let the number be x.

then,

12.4% of x = 12.4/100 x

now, increasing x by 12.4% we get

x + 12.4x/100

= (100x + 12.4x)/100

= 112.4x/100

according to question

112.4x/100 = 2248

1124x/1000 = 2248

x = 2248/1124 × 100

x = 2000

hence, the number which on increase by 12.4% becomes 2248 is 2000.

que 8)

6¼% = (6×4 +1)/4 % = 25/4 %

now,

let the number be x.

25/4% of x = 25/400 x

now, decreasing x by 25/4 % we get

x - 25x/400

= (400x - 25x) /400

= 375x/400

according to question

375x/400 = 1500

375x = 1500 × 400

375x = 600000

x = 600000/375

x = 1600

hence, the number which when decreased by 6¼ % becomes 1500 is 1600.

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