Question

There are two alloys of A, B and C called ABC. The first alloy ABC1 is known to
contain 26 per cent of B and the second alloy ABC2 contain 40 percent of C. The
percentage of A is the same in both alloys. Having alloyed 300 kg of ABC2 and
500 kg of ABC1, we get a new alloy ABC3 that contain 30 percent of A. How many
kilograms of C is there in the new alloy ABC3?
a) 350 kg
b) 340 kg
c) 320 kg
d) 332 kg​

Answer 1

Answer:

FIRST ALLOY

1

st

Alloy 150kg is used.

40% is platinum in first alloy

100

40

×150=60kg of PLATINUM

SECOND ALLOY

2

nd

ALLOY 250kg is used

26% of silver =

100

26

×250=65kg

New alloy =150+250=400kg has 30% gold =

100

30

×400=120kg gold

since both contain same % of gold x% of 150 + x% of 250=120

100

x

×150+

100

x

×250=120

1.5x+2.5x=120

x=30%

In second alloy 100−(30+26)=44% of platinum is there

44% of 250 =

100

44

×250=110kg

In new Alloy Platinum is 110+60kg =170kg

Answer 2

Answer:

350

Step-by-step explanation:

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