Four gardeners with 4 grass mowers mow 400 square metres of ground in four hours. How long would it take for 8 gardeners with 8 grass mowers to mow 800 square metres of ground?

Which of the following fractions has the highest value 3/5, 4/3, 2/5, 1/2

Directions: Select one of the given numbers to replace the question mark in the series. 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, ?

Directions: Select the appropriate number to fill in the blank in the series. 100, 50, 33.33, _____, 20

Directions: Select one of the given numbers to replace the question mark in the series. 117, 104, 91, 78,?

Directions: Select the appropriate number to fill in the blank in the series. 3, 9, _____, 6561

Directions: Select one of the given numbers to replace the question mark in the series. 88, 96, 104,?

Y travels 15 kilometres due South, then 5 kilometres due west, then 18 kilometres due north, then 3 kilometres due south, then 5 kilometres due East. How far is he from the starting point?

Ram borrows Rupees 520 from Govind at a simple interest of 13% per annum. What amount of money should Ram pay to Govind after six months to be absolved of the debt?