# Mind Tickler?

I am doing a crossword book that has a mind tickler puzzle I am stuck on and need help. It is the following:

A former chemist opened a science-themed candy shop, and he had some special offers for the first week:

1.) 10 Neutrons and 10 Electrons: 55 cents (save 5 cents)

2.) 5 Electrons and 10 Protons: $1 (save 10 cents)

3.) 25 Neutrons: 40 cents (save 10 cents)

What would be the full price of 1 Neutron, 1 Electron, and 1 Proton?

### 1 Answer

Relevance

- Wayne DeguManLv 74 months ago
10N + 10E = 60

so, N + E = 6...(1)

5E + 10P = 110

so, E + 2P = 22...(2)

25N = 50

i.e. N = 2

(1) => 2 + E = 6

so, E = 4

(2) => 4 + 2P = 22

so, 2P = 18

Then, P = 9

Hence, 1 Neutron = 2 cents, 1 Electron = 4 cents and 1 Proton = 9 cents

:)>

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