i have lots of quetion to ask but i dont have so much points so here there are 6 question answer it plzzz

1.I have a total of Rs 300 in coins of denomination Re1, Rs 2, and Rs 5, the number of Rs 2 coins is 3 times the number of Rs 5 coins. the total number of coins is 160. how many coins each of denomination r with me?

2.the orgainser of an essay competation decide that a winner in the competation get a prize of Rs 100 and a participant whao does not win gets a prize of Rs 25. the total prize money distributed is Rs 3,000. find the number of winners, if the total number of participant is 63.

3.solve

a.5x +9=5 +3x

b.2x -1 =14-x

c.x=4/5 (x+10)

d.3m =5m - 8/5

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