Mathematics
YouveBeenLokid
3

Solve photo question. Mathematics. Please. Easy one. And last one.

+0
(1) Answers
richboy

A collection of nickels and dimes is worth $4.40. There are 53 coins in all. How many nickels are there? Nickel is a US coin worth 5 cents or 0.05. Dime is a US coin worth 10 cents or 0.10 n + d = 53 0.05n + 0.10d = 4.40 n = 53 - d 0.05(53 - d) + 0.10d = 4.40   2.65 - 0.05d + 0.10d = 4.40 0.05d = 4.40 - 2.65 0.05d = 1.75 d = 1.75 / 0.05 d = 35 n = 53 - d n = 53 - 35 n = 18  There are 18 nickels and 35 dimes. 0.05n + 0.10d = 4.40 0.05(18) + 0.10(35) = 4.40 0.90 + 3.5 = 4.40 4.40 = 4.40

Add answer