Question

(a) 20% of a number is 17. Find the number.
(b) 175% of a number is 49. Find the number.
(C) The result of a number, when increased by
15%, is 161. Find the number.
(d) The result of a number, when decreased by
20%, is 192. Find the number.​

Answer 1

Step-by-step explanation:

(a)20/100*x=17

x=17÷20/100

x=17*100/20

x=17*5

x=85

(b)175/100*x=49

x=49÷175/100

x=49*100/175

x=49*4/7

x=7*4

x=28

Answer 2

Answer:

a) 85 ,b)28

Step-by-step explanation:

a) let no be x

20/100 into x=17

17into100/20

=85