A pail that contains 40 nails of the same weight, weighs a total of 175g. When it contains 20 such nails, i

Favorites|Homepage
Subscriptions | sitemap

HOME > > A pail that contains 40 nails of the same weight, weighs a total of 175g. When it contains 20 such nails, i

A pail that contains 40 nails of the same weight, weighs a total of 175g. When it contains 20 such nails, i

[From: ] [author: ] [Date: 12-05-15] [Hit: ]

Each nail is 4g.The pail 15g.......

A pail that contains 40 nails of the same weight, weighs a total of 175g. When it contains 20 such nails, it weighs a total of 95g. What is the weight of each nail?

-

175 - 95 = 80g
40 - 20 = 20
So, 20 nails weigh 80g.
80/20 = 4g

Answer: 4 g

-

Assume weight of each nail is n and weight of pail is p.

p + 40n = 175

p + 20n = 95

20n = 80

n = 4 g

-

40x + b = 175g
20x + b = 95g
20x=80g
x=4g
Each nail is 4g.
The pail 15g.

1

keywords: same,20,of,that,such,pail,weight,175,total,contains,it,When,nails,weighs,40,the,A pail that contains 40 nails of the same weight, weighs a total of 175g. When it contains 20 such nails, i

New

Hot