<PRE><B>Question 257367</B>
From the given we can create several equations:
(i) {{{5N + 10D + 25Q + 50H = 1000}}}
(ii) Q = 2H
(iii) D = 2Q
(iv) N = 3D
Substituting everything in for the variable H, we get
(v) {{{60H + 40H + 50H + 50H = 1000}}}
solving, we get
(vi) {{{200H = 1000}}}
(vii) {{{H = 5}}}
so, 
Q = 2H = 2*5 = 10
D = 2Q = 2*10 = 20
N = 3D = 3*20 = 60.
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checking we get
5(60) + 10(20) + 25(10) + 50(5) = ????
300 + 200 + 250 + 250 = 1000</PRE>