What weight of water must be added to 50lb of a 45% brine solution to yield a 20% solution? b. 55.1 lbs d. 37.5 lbs a. 61.3 lbs c. 62.5lbs

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53. What weight of water must be added to 50lb of a 45% brine solution to yield a 20% solution?
b. 55.1 lbs.
a. 61.3 lbs.
c. 62.5lbs
d. 37.5 lbs.
54. The tens digit of a certain two digit number exceeds the units digit by 4 and 4 less than thrice the units digit.
Find the two digit number.
a. 37
b. 84
c. 58
d. 99
55. The tens digit of a certain two digit number is 1/3 of the units digit. When the digits are reversed, the new
numbers exceeds twice the original number by 1 more than the sum of the digits. Find the original number.
a. 26
b. 39
c. 13
d. 28
56. The denominator of a certain fraction is three more than twice the numerator. If 7 is added to both terms of
the fraction, the resulting fraction is 3/5. Find the original fraction.
a. 8/5
b. 13/5
c. 5/13
d. 3/5
57. A man left their office at past 3 o'clock for merienda. After 20 minutes on his return, he noticed that the
minute hand is ahead of the hour hand exactly by as much as it was behind when he left. At what time did
he leave?
a. 3:07.36
b. 3:08.36
c. 3:06.16
d. 3:06.36
Transcribed Image Text:53. What weight of water must be added to 50lb of a 45% brine solution to yield a 20% solution? b. 55.1 lbs. a. 61.3 lbs. c. 62.5lbs d. 37.5 lbs. 54. The tens digit of a certain two digit number exceeds the units digit by 4 and 4 less than thrice the units digit. Find the two digit number. a. 37 b. 84 c. 58 d. 99 55. The tens digit of a certain two digit number is 1/3 of the units digit. When the digits are reversed, the new numbers exceeds twice the original number by 1 more than the sum of the digits. Find the original number. a. 26 b. 39 c. 13 d. 28 56. The denominator of a certain fraction is three more than twice the numerator. If 7 is added to both terms of the fraction, the resulting fraction is 3/5. Find the original fraction. a. 8/5 b. 13/5 c. 5/13 d. 3/5 57. A man left their office at past 3 o'clock for merienda. After 20 minutes on his return, he noticed that the minute hand is ahead of the hour hand exactly by as much as it was behind when he left. At what time did he leave? a. 3:07.36 b. 3:08.36 c. 3:06.16 d. 3:06.36
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