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Subject :IMO    Class : Class 8

Ans 1:

Class : Class 8
This equation is formed like that: Let present age =x Twenty years ago=x-20 A.T.C x-20 = 1/3 ×x -20 =1/3x-x -20 = -2/3x 20÷2/3 =30 years Age after 15 years =30+15 =45 years

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
I THINK THURSDAY OR MONDAY SHOULD BE EXCLUDED

Ans 2:

Class : Class 7
I think B

Ans 3:

Class : Class 7
b

Ans 4:

Class : Class 7
according to me, the ans should be 3 litres. as 1.5 L * 3 = 4.5 L which is the amount used in 3 days(Tue, Wed n Thurs) hence, 7.5 L- 4.5 L=3 LITRES.That, according to me, is the answer

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Subject :IMO    Class : Class 9

Ans 1:

Class : Class 9
d = 75% of old d ..... => r = 75 %of old r..... volume of sphere =4/3 *pi*r*r*r...... new= 4/3*pi*r*r*r*27/64..... 4/3*pi*r*r*r will cancel out..... volume(new) =27/64 of old, decreased by 37/64, % =37/64*100=3700/64=37*25/16 = 57.81.... therefore answer is opt (D) .....hope you understood!!!!!

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 3
B

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 5
C

Ans 2:

Class : Class 4
c

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Subject :IMO    Class : Class 4

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5
they should learn HCFthe answer is 15 and not 12have not counted another 3

Ans 3:

Class : Class 5
C

Ans 4:

Class : Class 5

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Subject :IMO    Class : Class 3

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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
All fruits together = 100% OR x Apples = 30% of x OR 30/100 of x = 3/10 x Oranges= 50% of (x - 3/10 x) OR 1/2 of (x - 3/10 x) = 1/2 of 7/10 x = 7/20 x Pears = 20/20(All Fruits) - {6/20(Apples) + 7/20(Oranges)} = 20/20 - 13/20 = 7/20 Therefore it is clear that 7/20 of all fruits is pears. Hope this was helpful!

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Subject :IMO    Class : Class 3

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