NECO Mathematics Past Questions & Answers - Page 24

116.

Simplify 2a2 -4ab - 6a2 - 10ab + 5ab - 5a2

A.

-9(a + b)

B.

9(a + b)

C.

-9a (a + b)

D.

9a(a - b)

E.

9b(a + b)

Correct answer is C

No explanation has been provided for this answer.

117.

An amount of money is shared among P,Q and R such that for every 3P gets, Q gets 2 and for every 1Q gets, R gets 4. Find P: Q : R

A.

3 : 1 : 4

B.

3 : 2 : 1

C.

3 : 2 : 4

D.

3 : 3 : 4

E.

3 : 2 : 8

Correct answer is E

P gets 3 Q gets 2, Q gets 1 and R gets R 

When Q gets 1 then P will get \(\frac{3}{2}\)

P : Q: R =   \(\frac{3}{2}\) : 1  : 4 

multiplying through by 2, we have

3 : 2:  8.

 

118.

Solve the equation: \(\frac{1}{3}x\) + \(\frac{2}{5}\) = \(\frac{3}{4}x\) - \(\frac{1}{6}\)

A.

\(\frac{17}{30}\)

B.

\(\frac{65}{102}\)

C.

\(\frac{25}{34}\)

D.

\(\frac{102}{75}\)

E.

\(\frac{34}{25}\)

Correct answer is E

No explanation has been provided for this answer.

119.

After what length of time will N2400.00 yield an interest of N60.00 at 1\(\frac{1}{2}\)% per annum?

A.

2\(\frac{4}{5}\) years

B.

1\(\frac{2}{3}\) years

C.

1\(\frac{1}{2}\) years

D.

1 years

E.

\(\frac{3}{5}\) year

Correct answer is B

No explanation has been provided for this answer.