the number 3 and another number greater than 10 have a common multiple of 30. what could be the other number?

The number 3 and another number greater than 10 have a common multiple of 30. What could be the other number? => 15 or 6 or 10 or 20..

Let us consider the sales done by a school canteen for two successive days. Monday 25 cokes 12 cakes Tuesday 40 cokes 7 cakes Each coke costs $ 5 and cake costs $ 10. The sales can be expressed as a 2 x 2 matrix and the price as a 2 x 1 matrix as given below: The amount collected for two ..

Question: Four numbers are in AP. Sum of the first three is 21 and sum of last three is 30. Find the numbers. Answer: Let the numbers a - 3d, a - d, a + d, a + 3d be in AP. ..

Question: If the first term of an AP is 11, the common difference is 3 and the last term is 98, find the number of terms. Answer: 98 = 11 + (n - 1)3 98 - 11 + 3 = 3n 3n = 90 n = 30 Hence the numberh..

Find the ratio of 2 hours 30 minutes to 45 minutes. 2 hours 30 minutes = 150 minutes ratio is 150 minutes : 45 minutes or 10:3 Ans: 10 : 3 Simplify the ratio can be rewritten as or 9 : 5 Ans: 9 ..

The greatest of the common divisors of two or more than two numbers is called the GCD or HCF (Highest Common Factor). The least common multiple of two or more than two numbers is called the L..

Multiplication of a Matrix by a Scalar - When a matrix is multiplied by a scalar factor k, then each element of the matrix is multiplied by ..

(i) RHS (ii) From (i) and (ii), LHS = RHS Hence proved. Which number should be added to each of the numbers 7, 22 and 62 so that the sums would be in continued proportion? Let the number added to each of them be 'x..

We have defined rational numbers as those which can be expressed as fractions: We now define decimal fractions. The rational numbers can be expressed as terminating or recurring decimals. Decimal fraction has denominator as 10 or a power of 10..

The ratio 5:3 is of greater inequality. The ratio 2:5 is of less inequality. The ratio 3:3 is of equalit..