Question

48. The difference between a number and its two
fifth is 510. What is 10% of that number?
(a) 12.75 (b) 85 (c) 204
(d) None
One litre of water is evaporated from 6 litres of a
solution containing 5% salt. The percentage of
salt in the remaining solution is
(a) 16% (b) 5% (c) 4% (d) 6%
50. A shopkeeper professes to sell all things at a
discount of 10% but increases the Selling Price
of each article by 20%. His gain on each article is​

Answer 1

Answer:

B) 85

Step-by-step explanation:

Here you go,

Let the number be x.

So,

x-2/5(x) = 510

(5x-2x)/5 = 510

3x = 510*5

x = 2550/3

x = 850.

Hence, 10% of that number(x) = (10/100)*850 = 85