Question

A single discount equivalent to successive discount of 30% 20% and 10%
a.50% b.51% c.49.4% d.49.6%​

Answer 1

Answer:

Let initial price be x

after 30%=7x/10

then 20% =20/100×7/10=140/1000=7/50, remaining- 7/10-7/50=28x/50;now 10percent =10/100×28x/50=28/50=7/125, remains =28/50-7/125=(140-14)x /250=136/250=68x/125

discount = x-68x/125

=125x-68x/125

=57x/125

%=57x/125x×100=45.6%

No any options are correct.