P lent Rs.600 to Q for 2 years and Rs.150 to R for 4 years and received altogether from both Rs.90 as interest. Find the rate of interest, simple interest being calculated

For prime numbers p and q, p + q = 102 and p > q. What is the least possible value of p − q?

If a₁ = 1 and a_n+1 = 2a_n + 5, n = 1, 2 ...., then a₁₀₀ is equal to :

If x + y = 2, then the value of x⁴ + y⁴ – x³ y² – x² y³+16xy is equal to

Manzoor had two equations containing three variables each. If they were x + 2y + 5z = 33, 2x+ 3y + z = 27, then which of the following choice will help him get a unique solution for x, y and z?

The difference in the money between A and B is Rs.1450.C has money twice of B and difference in the money between A and C is Rs.700.So the amount with A is?

If l(s) = 3s² + 3s + 3, which of the following is equal to l(-3.5)?

Mayank, Mirza, Little and Jaspal bought a motorbike for $60.00. Mayank paid one half of the sum of the amounts paid by the other boys, Mirza paid one third of the sum of the amounts paid by the other boys; and Little paid one fourth of the sum of the amounts paid by the other boys. How much did Jaspal have to pay?

If the interest on Rs. 800 exceeds that on Rs. 600 by Rs. 15.50 in 6 months, find the rate percent p.a

Let tan θ = tan 10 − tan 50 + tan 70 then θis ?( all angles in degress)