[tex]\frac{3}{4}[/tex] of a piece of metal has 15 kg. What is the mass of [tex]\frac{2}{5}[/tex]
of the piece of metal?
of the piece of metal?
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Answer:
3/4 of metal is 15 kg.
let the total weight be x.
3/4 × x = 15
3x/4 = 15
by cross multiplication
3x = 60
x= 60/3
x= 20 kg
2/5 = ?
2/5 × 20
= 40/5
= 8 kg (answer)