Black pencils cost N75 each and colored pencils cost N105 each. If 24 mixed pencils cost N2010, how many were black?

Question

Margaret · Answer

Answer:   let black pencil be x  So colored pencils be(24-x)  A.T.Q.  75(x)+105(24-x)=2010  75x+2520-105x=2010  -30x=2010-2520  -30x=-510  x=17  No. of black pencils were 17

Kaylee

निम्नलिखित लघुत्तम ज्ञात करें।
12, 24, 36
(A) 12
(B) 24
(C) 96
(D) 48

8. Show that
6
V.(rſ) = (n + 2)r-1
where F is the unit vector along ř.
सिद्ध करें कि
V.(ruñ) = (n + 2)r-1

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