BNU1501 Basic Numeracy TEST PACK

BNU1501
EXAM PACK




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,SOLUTIONS FOR BNU 1501 EXAMINATION QUESTION PAPER
OCT/NOV 2016



1. 3(𝑦 + 2) = 4(2 − 𝑦)

3𝑦 + 6 = 8 − 4𝑦

3𝑦 + 4𝑦 = 8 − 6

7𝑦 = 2

2
𝑦=
7 Option [3]



2. 2(𝑥 − 1) − 3(𝑥 + 1) = 12𝑥 + 21

2𝑥 − 2 − 3𝑥 − 3 = 12𝑥 + 21

12𝑥 + 3𝑥 − 2𝑥 = −21 − 3 − 2

13𝑥 = −26

𝑥 = −2 Option [2]



3. √16𝑥16 = 4𝑥8 Option [4]



4. 2𝑥2 − (𝑥 − 3) − 2𝑥(1 + 𝑥)

= 2𝑥2 − 𝑥 + 3 − 2𝑥 − 2𝑥2

= −3𝑥 + 3 Option [1]

, 7 3 14
5. 24 X 16 ÷ 32

7 3 32
= 24 X 16 X 14
1
= Option [4]
8




6
3 5
6. + −
11 2 3


12 33 5
= 22 + 22 − 3


45 5
= 22 − 3


135 110
= 66 − 66


25
= 66 Option [2]




5
9 3
7. − ÷
9 8 4


5 9 4
9 − 8X3

5 3
9−2


10 27
18 − 18


17
− 18 Option [3]

, 8. 9𝑥𝑦 = 3 X 3 X 𝑥 X 𝑦

8𝑥2 = 2 X 2 X 2 X 𝑥 X 𝑥 X

6𝑥𝑦3 = 2 X 3 X 𝑥 X 𝑦 X 𝑦 X 𝑦

𝐿𝐶𝑀 = 2 X 2 X 2 X 3 X 3 X 𝑥 X 𝑥 X 𝑦 X 𝑦 X 𝑦

𝐿𝐶𝑀 = 72𝑥2𝑦3 Option [2]



9. 5𝑥 − 3 Option [3]



10. (𝑎𝑏2)(𝑎2𝑏)3 = (𝑎𝑏2)(𝑎6𝑏3)

= 𝑎7𝑏5 Option [3]



11. 𝐶i𝑟𝑐𝑢𝑚f𝑒𝑟𝑒𝑛𝑐𝑒 𝑜f 𝑡ℎ𝑒 j𝑎𝑐𝑢𝑧𝑧i = 𝜋𝑑

=𝜋X3

= 9,4 𝑚 Option [1]



12. 𝑃𝑎𝑣𝑒𝑑 𝑎𝑟𝑒𝑎 = [( 1
12 X 8)] − [(2 X 3 X 3 X 4) (𝜋 X 1,52)]
+

96 − 18 − 2,25𝜋

= 78 − (2,25𝜋)

= 70,9 𝑚2 Option [4]