Cyzarine was asked by her teacher to subtract 4 from a number and to divide the result by 8. However, she subtracted 8 from that number and divided the result by 4 to get 45. If she had done it correctly, what answer would she have gotten?
The graph below shows the temperature (in degrees Celsius) over 10 weeks in Yaroslavl and Vladivostok. Find the difference in the temperature of two cities in the week when the difference is maximum.
In a ^@3^@-digit number, the hundreds digit is ^@nine \space times^@ the tens digit while the units digit is ^@thrice^@ the tens digit. Also, the sum of its digits is ^@13^@. Find the number.
Two candles have different lengths and thickness. The shorter lasts 9 hours and the longer 7 hours when both are lit simultaneously. If after 4 hours of their being lit together at the same time, both have the same length, then find the ratio of their original lengths.