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Subject :IMO    Class : Class 7

Ans 1:

Class : Class 7
Let the no. Be x 5(4+x)-20/8=10 20+5x-20/8=10 5x/8=10 5x=10×8 5x=80 X=80/5 X=16 According to me.

Ans 2:

Class : Class 7
Equation: ((5(4+n))- 20)/8= 10 = (5(4+n))- 20= 10x8 = 5(4+n)= (10x8)+ 20 =4+n= (10x8+20)/5 =n= ((10x8+20)/5)- 4 =n= (100/5)- 4 =n= 20- 4 n=16

Ans 3:

Class : Class 8
Let, 3rd no. = x, Let, 2nd no.= 20/100 (also N1), Let, 1st no. = 50/100 (also N2), Then, Ratio of 1st to 2nd no. = (50/100)/(20/100) =1/2(i.e. 50/100)*5(i.e. 1/{20/100}=100/20} OR Ratio of 2nd no. to 1st no. =Vice versa of (N1:N2)= 2:5

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Subject :IMO    Class : Class 7
30

Ans 1:

Class : Class 7
30 trees

Ans 2:

Class : Class 7
30

Ans 3:

Class : Class 7
630/21= 30 There would be 30 trees in one row.

Ans 4:

Class : Class 7
Let the required no. Be x 21x=630. ,. X=630÷21 ,X=30

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
100

Ans 2:

Class : Class 8
100 crores

Ans 3:

Class : Class 5
100 crores

Ans 4:

Class : Class 7
100 crores

Ans 5:

Class : Class 5
100 crores

Ans 6:

Class : Class 5
100 crores

Ans 7:

Class : Class 8
100 crores

Ans 8:

Class : Class 6
100 crores

Ans 9:

Class : Class 6
100

Ans 10:

Class : Class 6
100 crores

Ans 11:

Class : Class 6
100 CRORES

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Subject :IMO    Class : Class 6
16

Ans 1:

Class : Class 4
Biggest : 7,430 Smallest: 3,047

Ans 2:

Class : Class 6
16

Ans 3:

Class : Class 4
4:5

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 6
90

Ans 2:

Class : Class 8
90

Ans 3:

Class : Class 6
7430, 3047

Ans 4:

Class : Class 6
90

Ans 5:

Class : Class 4
90

Ans 6:

Class : Class 8
90

Ans 7:

Class : Class 8
90

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