Question

Ahmad buys a plot of land for $48000.He sells 2/5 of it at loss of 6%. At what gain percent should he sell the remaining part of the plot to gain of 10% on the whole?

Answer 1

Buy of land =480000
 2/5*480000=192000 rs
loss=6%
100-6/100*192000=180480

total gain =10%
100+10/100*480000=528000

sp=528000-180480=347520

cp of remaining part of land =3/5*480000=288000

gain% of remaining part of land= sp-cp/cp*100

<=>347520-288000/288000*100
=20.6 %