Answer:
45
Step-by-step explanation:
These work problems are always done in terms of fractions ie if both (Kevin & Eric) took 30mins to mow and Kevin took 1.5hrs (90mins) alone then we can make an equation like below
1/time took for both = 1/time took for Kevin + 1/time took for Eric
1/30 = 1/90+1/x ==> calling time took for Kevin x
solving the above 1/x = 1/30-1/90
1/x=2/90
x=45
Answer: The top left one is -3, 6 bottom right is -6, 3
Step-by-step explanation:
40 because if you multiply 2 by 100 it is 200 then divide that by 5 and you get 40
Answer:
64
Step-by-step explanation:
;)
