A father is now three times as old as his son. Twelve years ago he was six times as old as his son. How old are the son and the father?

After getting a rise of 15%, a man's new monthly salary is N345. How much per month did he earn before the increase?

The annul profits of a transport business were divided between the partners A and B in the ratio 3 : 5. If B received N3000 more than A, the total profit was

In base ten, the number 101101 (base 2) equals

In \(\bigtriangleup\)PQR, PQ = 10cm, QR = 8cm and RP = 6cm, the perpendicular RS is drawn from R to PQ. Find the length of RS

\((1.28 \times 10^{4}) \div (6.4 \times 10^{2})\) equals

If the value of \(\pi\) is taken to be \(\frac{22}{7}\), the area of a semi-circle of diameter 42m is

(3.2)2 - (1.8)2 equals

The mean of the numbers 1.2, 1.0, 0.9, 1.4, 0.8, 0.8, 1.2 and 1.1 is