A group of 266 persons consists of men, women, and children. There are four times as many men as children, and twice as many women as children. How many of each are there?

Ineed asap.i cant understand this question i need someone to me right away

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.

Determine the equivalent system for the given system of equations: 5x − 3y = 6 x + y = 2