...each of the rest had to pay 4s. more than he otherwise would have done. Required their number. (28.) What number is that, which being divided by the product of its two digits, the quotient is 5£, but when 9 is subtracted from it, there remains a number having the same digits inverted ? (29.)...

...if you subtract it from 10 and multiply the remainder by the number itself, the product will be 21?" "What number is that which being divided by the product of its digits, the quotient is 3, and if 18 be added to it, the order of the digits will be inverted ?" The...

...mx3+mn=2mV/nx+nx3. Ex.8. P. 151. 7. Find x in the following: a2+b2— 2bx+xa=m^. Ex. 15. P. 151. 8. What number is that which being divided by the product of its digits, the quotient will be 3 ? and if 18 be added to it the order of its digits will be reversed?...

...mx2+mn=;2mVnx+nx2. Ex.8. P. 151. 7. Find x in the following: a2+bs— 2bx+x2=— *. Ex. 15. n2 P. 151. • 8. What number is that which being divided by the product of its digits, the quotient will be 3 ? and if 18 be added to it the order of its digits will be reversed?...

...Hence, 54 is the number. 13. There is a number expressed by two figures, the sum of whose digits is 13, and if 27 be subtracted from the number, the digits will be inverted. What is that number ? 14. A says to B, " Give me $1 of your money, and I shall have twice...

...same distance. What is the circumference of each ? Ans. Fore-wheel, 4 yds. ; hind-wheel, 5 yds. 16. What number is that, which being divided by the product of its two digits gives 2 for the quotient, and if 27 be added to it the order of the digits will be inverted ? Ans....

...and easy of solution. These devices are of special necessity in examples involving progressions. ] 1. What number is that which being divided by the product of its two digits.^the quotient is 2, and if 27 is added to it the digits are reversed ? 2. There are three numbers,...

...27ж — 280 = О or (ж + 35)(ж-8) = 0 /. ж = 8 or -35. /. A travelled 120 miles, and В 160 miles. (17) What number is that which being divided by the product of its two digits, the quotient is 6, and if !) be added to it, the digits will be inverted ? Let x and y represent the digits the number....

...50625 225 255 ж = ~32 ± Vie" 1024 ~ 88 Я ' using the positive value only, x •=. — - = 15. Ai 6. What number is that, which being divided by the product of its digits, the quotient will be 3 ; and if 18 be added to it, the order of its digits will be reversed...

...The sum of two numbers is 13, and the difference of their squares is 39. \\ hat are the numbers? 4. What number is that which, being divided by the product of its digits, is 3, and if 18 be added to it, the order of its digits will be reversed? 5. Find square root...