Subject :IMO Class : Class 4
The weight of 
is __________ 
.
A10
B5
C20
D15
Ans 1:
Class : Class 7
answer is a
we know that 1 football= 5 tennis balls and a gift box
2 gift box= 10 tennis balls
so we can say that football is f and tennis ball is t and gift box is g
2g=10t
so 1g=5t
so 1f =5t and 1g or 1f=5t+5t=10t or 2g
so 1f =10t
1 football equals to 10 tennis balls
Ans 2:
Class : Class 4
ANSWER IS A