Qualification > Math

A Piece of cake question

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SauD~:
Need help for part b.. i got 960m after recalculating but a friend of mine says we have to find area of the whole triangle, he included that he saw it in the mark scheme. Can you help me by telling whether 960m is correct or the area of the whole triangle?

Master_Key:

--- Quote from: $~SauD~$ on May 08, 2011, 04:09:53 pm ---Need help for part b.. i got 960m after recalculating but a friend of mine says we have to find area of the whole triangle, he included that he saw it in the mark scheme. Can you help me by telling whether 960m is correct or the area of the whole triangle?

--- End quote ---

(40*12) + (0.5 *10 *24) + (0.5*30*24)

= 480+120+360
= 960

SauD~:

--- Quote from: Master_Key on May 08, 2011, 04:18:08 pm ---(40*12) + (0.5 *10 *24) + (0.5*30*24)

= 480+120+360
= 960

--- End quote ---
how did you got  (40 * 12) ? :-\

Master_Key:

--- Quote from: $~SauD~$ on May 08, 2011, 04:20:54 pm ---how did you got  (40 * 12) ? :-\

--- End quote ---
Area of the rectangle.

NotAbod:

--- Quote from: Master_Key on May 08, 2011, 04:18:08 pm ---(40*12) + (0.5 *10 *24) + (0.5*30*24)

= 480+120+360
= 960

--- End quote ---
master, isnt it supposed to be distance travelled by CAR while it was travelling FASTER than the truck?
could u please explain your answer?

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