Question

Anyone Pls help me Pls

Answer 1

Step-by-step explanation:

for question number 9

Given,

In 8 days earth picks 6.4*10^7kg dust ,means

In 1 day earth picks (6.4*10^7)/8=8*10^6

thus,

in 15 earth picks 15*8*10^6=1.2*10^8,kg of dust.

for question number 10

given,

For their 250 students and food last for 18 days.

if 50 students are joined to same group then food will last for 18- (50*18)/250=14