Question

Bookshelf sold for 1260 and gain 5% profit find the cp of the shelf

Answer 1

Cp=
$\frac{100 \times sp}{100 + profit \: percent}$
Sp = 1260
Gain is 5%

=(100*1260)/100+5

= 126000÷105

= 1200

C.P = 1200

Answer 2

sp=1260
gain=5 percent
so,cp=100/100+5×1260
=100/105×1260
=20/21×1260
=20×60
=1200

l think its useful for you