Answer all please. Need ko po solution as well as explanation

answers are as follows:

51 A

52. C

53.C

57. A

25. B

26.C

25. Which of the following has the greatest value? a ) (62 )(82) C) (63 ) (82 ) 16 168 b ) (62 )(82 d) (6' )(83 ) 26. Which of the following cannor yield an odd integer when divided by 10? a) The sum of two odd integers. b) The product of a prime number and an odd integer. c) The product of two odd integers. d) The sum of three consecutive integers.51. Last month a store manager decided to decrease the prices of all items by 10%. This month he increased the prices by 10%. What would be the price for a pair of pants that had cost P750 before prices were decreased last month? a) P 742.50 c) P 675.00 b) P 750.00 d) P 825.00 52. When the original price of an item is increased by a certain rate, the increased price is P3 100. When the original price is decreased by the same rate, the decreased price is P 1 900. What is the original price of this item? a) P 1 200 b) P 200 c) P 2 500 d) P 2 800 53. How much must one has to invest in corporate bonds paying 9.6% in order to earn an income of P 12,000 per annum? a) P 11 520 c) P 125 000 b) P 23 040 d) P 250 00057. How many liters will remain in a 1000-liter storage tank if 8.2% of the liquid has evaporated due to excessive heat? a) 918 b) 991.8 c) 999.18 d) 998