1 litre of 10% solution contains 100mL of iodine
1 litre of 90% solution contains 900mL of iodine
Mixing them will produce 2 litres of solution containing 1000mL of iodine which is 50% iodine.
To produce 8 litres of 50% iodine they can mix 4 litres of 10% and 4 litres of 90%
Answer:
two and a half
Step-by-step explanation:
Answer: 30
Step-by-step explanation: 6 factors as 3 × 2 and 5 doesn't factor. When finding the least common multiple, we're looking for factors that match up and here we have no factors that match up. This means that our least common multiple or <em>lcm</em> is simply 3 × 2 × 5 or 6 × 5 which is 30.