Question

Average rainfall on monday, tuesday, wednesday and thursday is 24 cm. Average rainfall on thursday, friday, saturday and sunday is 30cm. Average rainfall on monday to sunday is 27 cm. Then find the actual rainfall on thursday. Select one: a. 25 b. 27 c. 28 d. 38

Answer 1

d) 38 is ur answer mate

Answer 2

Answer:  b. 27

Step-by-step explanation:

According to the given information we have :

$24=\dfrac{\text{Sum of actual rainfall from Monday to Thursday}}{\text{Number of days}}\\\\=\dfrac{\text{Sum of actual rainfall from Monday to Thursday}}{4}=24\\\\\Rightarrow\ \text{Sum of actual rainfall from Monday to Thursday}=S_1=24\times4=96$

Similarly,

$\\\\\Rightarrow\ \text{Sum of actual rainfall from Thursday to Sunday}=S_2=30\times4=120$

$\\\\\Rightarrow\ \text{Sum of actual rainfall from Monday to Sunday}=S=27\times7=189$

Now,

$\text{Actual rainfall on Thursday =}S_1+S_2-S\\\\\Rightarrow\ \text{Actual rainfall on Thursday =}96+120-189\\\\\Rightarrow\ \text{Actual rainfall on Thursday =}27\ cm$