Question

4 A Bakery sells two choco chip cakes at 175 each. If it made 20% loss on selling one and 40% profit on
selling the other, find its net loss or profit per cent on the sale of the two cakes
5. All goods at an electronics shop are marked 30% above cost price. After allowing 8% discount on a stereo
set, if the shopowner gets 10,166, at what price had the shopowner bought the stereo set?​

Answer 1

Answer:

(4)net gain=1.818%

(5)cp=8458.19

Step-by-step explanation:

sp1=sp2=175

for 20% loss

20%=(cp-sp)*100/cp

=(1-sp/cp)*100

so

1-(sp/cp)=20/100=0.2

or sp/cp=0.8

and (175/cp)=0.8

cp1=175/0.8

=218.75

For cp2,

40%=(sp/cp)-1=0.4

sp/cp=1.40

175/cp=1.40

cp2=175/1.4

=125

Now net cp=218.75+125

=343.75

net sp=350

gain%

=(350-343.75)*100/343.75

=6.25*100/343.75

=625/343.75

=1.8181818181818

(5)He gets 10166 finally.

So before 8% discount,

the marked sp was

10116/0.92 (as 92 is 100-8%)

=10995.65

This is 30% above cp.

so

cp = 10995.65/1.30

= 8458.19