D.) 9,987,000 becomes 9.987 x 10^6
255 l ------ 340km
x l -------- 100km
100*255=340x
25500=340x
x=75 litres
-- Carefully cut <em>each bar into 6 equal pieces</em>.
There are (5 x 6) = 30 pieces all together.
Each piece is 1/6 of a bar.
-- Each child gets 5 of the pieces.
That's the same as <em>5/6 of a whole bar</em>.
(6 children) x (5 pieces) = 30 pieces. It works out. yay !
