8C
Math: cross multiplication (word problems). Show steps and calculations
e.g. For every 16mins Daniel spends doing his homework, his mark improves by 2.3%.
Last night, Daniel spent 82.5mins doing homework. Calculate his mark improvement. Show your work.
(ans: 11.85%)
A meteorite broke into five pieces when it entered the atmosphere. The data is listed below.
Calculate the size of each piece and the total mass of the meteorite (ans: 469.08gram)
Piece Portion Mass
A 12%
B 1/5
C 23% 107.89gram
D 1/8
E
Total
