Help me out guys !!!

Answer:
72.78 °C
Explanation:
Q=mcΔT
Q is energy added in joules (262)
m is mass in grams (15)
c is specific heat capacity in J/g°C (0.24)
ΔT is change in temperature in °C and thus the thing we need
262=15x0.24xΔT
262=3.6xΔT
72.777777777777777 = ΔT