Mathematics
A number is first decreased by 40% and then increased by 40%. The equivalent change is :
nothing
16% increase
16% decrease
8% increase
Related Questions
An alloy contains 30% of copper, 30% of zinc and rest nickel. The amount of nickel in 400 gm of alloy is :
40% of 400 gm
30% of 400 gm
70% of 400 gm
400 gm - 30% of 400 gm
Out of 700 eggs, 20% are rotten. The number of good eggs is :
140
560
680
840
80% of 200 - 50 is equal to :
30% of 200
110
80% of 150
none of these