The mean of the height of ^@ 4 ^@ poles is ^@ 244 \space cm^@. If the individual height of ^@ 3 ^@ of them ^@ 188, 190, \text{ and } 177 \space cm^@, find the height of the ^@4^{ th }^@ pole.
A ship is sailing in the South-East direction. If it changes its direction towards the East on moving anticlockwise from its present position then by what angle will it turn?
Divide ^@Rs700^@ into two parts such that the simple interest on the first part for ^@8^@ years at ^@17\%^@ per annum is equal to the simple interest on the second part for ^@2^@ years at ^@5\%^@ per annum.
A shopkeeper mixes two variants of rice in the ratio 3:5. The first variant costs 32 per kg, while the other costs 48 per kg. If the mixed rice is sold at the price of 48.3 per kg then find the profit/loss percent incurred by shopkeeper.