Question
If m : n = 2 : 3, then calculate the ratio (4m + n) : (m +
4n)Solution
ATQ,
Let the values of ‘m’ and ‘n’ be ‘2k’ and ‘3k’ respectively.
So, required ratio = {(4 × 2k) + 3k} : {2k + (4 × 3k)}
= {8k + 3k} : {2k + 12k}
= 11k : 14k
= 11 : 14
Which chemical is used to generate light to weld metals?
Which of the following cannot be cut by a knife?
Diamond is harder than graphite because of which of the following reason?
Sound cannot pass through –
Acid reacts with metal to form salt and liberates _________ gas.
In a compound, the elements are always present in definite proportions by:
Anesthesia which is administered during the surgeries in the hospitals is a mixture of which of the following gases?
100 gram of ice at 0°C is mixed with 100 gram of water at 80°C. What will be the final temperature of the mixture ?
Which of the following is used as a moderator in nuclear reactors?
Air coolers are more suitable for –