Question

A 60-kg ingot of brass consists of zinc and copper. 25% of the ingot consists of zinc.
How many kilograms
of copper does the ingot of brass contain?
IN NEED OF URGENT ANSWER IN STEP BY STEP EXPLANATION IF STEP BY STEP EXPLANATION IS GIVEN THEN WILL MARK AS BRAINLIEST DO NOT ANSWER UNNECESSARILY!​

Answer 1

Answer:

45 kg

Step-by-step explanation:

given, 60kg ingot of brass

therefore, mass of zinc in it = 25/100 x 60

                                             = 15 kg

therefore, amount of copper= 60- 15 kg

= 45 kg (ans)

Answer 2

Answer:

given

total ingot of brass=60kg=100%

that is

zinc + copper=100%

given zinc =25% substitute it in above

25%+copper=100

copper=100-25

copper=75%

if 100%===60

then 75%===? cross multiplication

?=60×75/100

=60×3/4

=15×3

45kg