Find the value of k in the following.
45% of 880−k% of 450=61.2% of 500
- A18
- B20
- C24
- D25
Solution & Step-by-step Explanation
Let's calculate each part of the given equation:
45% of 880:
100
45
×880=4.5×88=396
61.2% of 500:
100
61.2
×500=61.2×5=306
Substitute these values back into the expression:
396−
100
k
×450=306
396−306=
100
k
×450
90=k×4.5
k=
4.5
90
=20
45% of 880:
100
45
×880=4.5×88=396
61.2% of 500:
100
61.2
×500=61.2×5=306
Substitute these values back into the expression:
396−
100
k
×450=306
396−306=
100
k
×450
90=k×4.5
k=
4.5
90
=20