Question
In a 120-litre chemical mixture, the chemicals A and B are
in the ratio 5:7. How much of chemical A must be added to make the ratio 7:7 (i.e., equal amounts)?Solution
ATQ,
Quantity of A = (5/12) × 120 = 50 litres
Quantity of B = (7/12) × 120 = 70 litres
Let the amount of A to be added be x litres
Then, (50 + x) : 70 = 7 : 7
So, 50 + x = 70
x = 70 - 50 = 20 litres
More Mixture Questions
What value should come in place of (?) question mark in the given expression.
17 × 15 − 96 ÷ 8 + 6² = ?
Evaluate: 144 ÷ 12 × 6 + 35 − 4²
What will come in the place of question mark (?) in the given expression?
21 × 18 + ? – 19 × 15 = 25 × 24
2916 ÷ 54 = ? + 27
√324 + √484 + 63 = ?2Â
What will come in the place of question mark (?) in the given expression?
{(2/15) + (12/25)} of 375 + 190 = ?% of 375
- What will come in place of the question mark (?) in the following questions?
100−[20+4×5]=? (72 × 52 + 1555 )/(79+60) = 2000 ÷ ?
72 × 2 = ? + 104 – 14
672 ÷ 28 × 24 + 363 – 309 =?
