Hi . I need help with the question below and the one in the picture. (1.) Four girls shared a certain sum of money. The first received ½ of it , The second received ¼ and the third received 1/5 of it . If the fourth girl received 25 Kobo , what was the original sum of money.
(a). N6.00
(b). N5.00
(c). N4.50
(d). N3.50
(e). N2.50

Note : 100kobo = N1

Workings Please.

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true