Mathematics Past Questions and Answers

Simplify \(\frac{0.045 \times 2.5}{0.5}\) correct to 2 significant figures

Simplify \(\frac{2 \frac{2}{3} \times 1 \frac{1}{2}}{3 \frac{1}{2}}\)

Factorize \(s x-k y-5 y+k x\)

The ratio of the price of a loaf of bread to the price of a packet of sugar in 1975 was \(r: t\), in 1980 the price of a loaf went up by \(25 \%\) and that of a packet of sugar by \(10 \%\). Their new ratio is now

Find a two-digit number such that three times the tens digit is 2 less than twice the units digit, and twice the number is 20 greater than the number obtained by reversing the digits.