f2-math-revision-exercise-chapter-4-to-7.doc

f2-math-revision-exercise-chapter-4-to-7.doc - F.2...

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F.2 Mathematics Revision Exercise (Ch.4 ~ Ch.7) 1. Given that ( x + 1) : (2 x 3) = 5 : 3 and ( y + 2) : (3 y 1) = 2 : 5, find the value of x : y . 2. Given that ( x + 2) : (3 x 2) = 6 : 5 and ( y + 1) : (2 y 3) = 1, find the value of y : x . 3. Let a : b = 3 : 5 and b : c = 4 : 7, find the value of a : b : c . 4. Let a : b = 4 : 7 and a : c = 9 : 10, find the value of a : b : c . 5. Let a 1 : b 2 = 3 1 1 , find the value of a : b . 6. Let a 3 : b 4 = 4 3 2 , find the value of b : a . 7. The ratio of the height of a tree to the length of its shadow on the ground is 4 : 3. If the shadow of a tree is 1.11 m long, what is the height of the tree? 8. Peter and Tom share $600. If Peter gets twice as much as Tom, how much does Peter get? 9. There are 3 n yellow balls and 2 n blue balls. If Amy and Betty share the yellow balls in the ratio 5 : 4 and the blue balls in the ratio 2 : 1, find the ratio of the total number of balls that Amy has to that Betty has. 10.
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This note was uploaded on 10/17/2011 for the course IELM 3010 taught by Professor Fugee during the Winter '11 term at HKUST.

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