Question
Two alloys are combined to create a new alloy. The first
alloy contains 20% copper, and the second alloy contains 40% copper. If the resulting alloy has 30% copper and weighs 60 kg, what is the weight of the first alloy used?Solution
Using alligation method the ratio of alloys = (40%-30%): (30%-20%) = 1: 1 Total weight = 60 kg the weight of the first alloy used = 60/2 = 30 kg
More Mixture Questions
What value should come in place of (?) in the given expression.
450 ÷ 9 + 75% of 160 − 64 ÷ 4 = ?
2/5 of 3/4 of 7/9 of 14400 = ?
7/3 of 4/5 of 15/56 of ? = 83
[564 + 32 of 18 × 9 ÷ 12 + 162 ] ÷ 4 = ?
What should come in place of (?) question mark in the given expression.
(25% of 320) + (3/8 of 400) − 30 = ?
45% of 360 - 160 + ? = √324
187 ÷ 5 ÷ 0.4 = ? – 24 × 2.4
Find the simplified value of the following expression:
[{12 + (13 × 4 ÷ 2 ÷ 2) × 5 – 8} + 13 of 8]
18 × 15 + 86 – 58 =? + 38
√(24²+285-8²-172) = ?²
